API Reference

Protocol APIs

Changed in version 4.8.0: Previously, ISized was defined here, but now it is imported from zope.interface.common.collections. The definition is the same.

Similarly, IReadSequence, previously defined here, has been replaced with zope.interface.common.sequence.IMinimalSequence.

Caution

Before version 4.8.0, most of these interfaces served as documentation only, and were not implemented by the classes of this package. For example, BTrees.OOBTree.BTree did not implement IBTree. (The exceptions were the IBTreeModule and IBTreeFamily families of interfaces and implementations.)

Beginning with version 4.8.0, objects implement the expected interface; the BTree classes implement IBTree, the set classes implement the appropriate set interface and so on.

interface BTrees.Interfaces.ICollection[source]

A collection of zero or more objects.

In a boolean context, objects implementing this interface are True if the collection is non-empty, and False if the collection is empty.

clear(): Remove all of the items from the collection.

interface BTrees.Interfaces.IKeyed[source]

Extends: BTrees.Interfaces.ICollection

has_key(key)

Check whether the object has an item with the given key.

Return a true value if the key is present, else a false value.

keys(min=None, max=None, excludemin=False, excludemax=False)

Return an IMinimalSequence containing the keys in the collection.

The type of the IMinimalSequence is not specified. It could be a list or a tuple or some other type.

All arguments are optional, and may be specified as keyword arguments, or by position.

If a min is specified, then output is constrained to keys greater than or equal to the given min, and, if excludemin is specified and true, is further constrained to keys strictly greater than min. A min value of None is ignored. If min is None or not specified, and excludemin is true, the smallest key is excluded.

If a max is specified, then output is constrained to keys less than or equal to the given max, and, if excludemax is specified and true, is further constrained to keys strictly less than max. A max value of None is ignored. If max is None or not specified, and excludemax is true, the largest key is excluded.

maxKey(key=None)

Return the maximum key.

If a key argument if provided and not None, return the largest key that is less than or equal to the argument. Raise an exception if no such key exists.

minKey(key=None)

Return the minimum key.

If a key argument if provided and not None, return the smallest key that is greater than or equal to the argument. Raise an exception if no such key exists.

interface BTrees.Interfaces.ISetMutable[source]

Extends: BTrees.Interfaces.IKeyed

insert(key)

Add the key (value) to the set.

If the key was already in the set, return 0, otherwise return 1.

remove(key)

Remove the key from the set.

Raises KeyError if key is not in the set.

update(seq): Add the items from the given sequence to the set.

__and__(other): Shortcut for intersection()

New in version 4.8.0.

__iand__(other): As for set.intersection_update(): Update this object, keeping only elements found in both it and other.

New in version 4.8.0.

__or__(other): Shortcut for union()

New in version 4.8.0.

__ior__(other): As for set.update(): Update this object, adding elements from other.

New in version 4.8.0.

__sub__(other): Shortcut for difference()

New in version 4.8.0.

__isub__(other): As for set.difference_update(): Update this object, removing elements found in other.

New in version 4.8.0.

isdisjoint(other): As for set.isdisjoint(): Return True if the set has no elements in common with other.

New in version 4.8.0.

discard(key): As for set.discard(): Remove the key from the set, but only if it is present.

New in version 4.8.0.

pop(): As for set.pop(): Remove and return an arbitrary element; raise KeyError if the object is empty.

New in version 4.8.0.

__ixor__(other): As for set.symmetric_difference_update(): Update this object, keeping only elements found in either set but not in both.

New in version 4.8.0.

interface BTrees.Interfaces.IKeySequence[source]

Extends: BTrees.Interfaces.IKeyed, zope.interface.common.collections.ISized

__getitem__(index)

Return the key in the given index position.

This allows iteration with for loops and use in functions, like map and list, that read sequences.

interface BTrees.Interfaces.IMinimalDictionary[source]

Extends: BTrees.Interfaces.IKeyed, zope.interface.common.collections.IMapping

Mapping operations.

Changed in version 4.8.0: Now extends zope.interface.common.collections.IMapping.

get(key, default)

Get the value associated with the given key.

Return the default if has_key() is false with the given key.

__getitem__(key)

Get the value associated with the given key.

Raise KeyError if has_key() is false with the given key.

__setitem__(key, value): Set the value associated with the given key.

__delitem__(key)

Delete the value associated with the given key.

Raise class:KeyError if has_key() is false with the given key.

values(min=None, max=None, excludemin=False, excludemax=False)

Return a minimal sequence containing the values in the collection.

Return value is an IMinimalSequence.

The type of the IMinimalSequence is not specified. It could be a list or a tuple or some other type.

All arguments are optional, and may be specified as keyword arguments, or by position.

If a min is specified, then output is constrained to values whose keys are greater than or equal to the given min, and, if excludemin is specified and true, is further constrained to values whose keys are strictly greater than min. A min value of None is ignored. If min is None or not specified, and excludemin is true, the value corresponding to the smallest key is excluded.

If a max is specified, then output is constrained to values whose keys are less than or equal to the given max, and, if excludemax is specified and true, is further constrained to values whose keys are strictly less than max. A max value of None is ignored. If max is None or not specified, and excludemax is true, the value corresponding to the largest key is excluded.

items(min=None, max=None, excludemin=False, excludemax=False)

Return an IMinimalSequence containing the items in the collection.

An item is a 2-tuple, a (key, value) pair.

The type of the IMinimalSequence is not specified. It could be a list or a tuple or some other type.

All arguments are optional, and may be specified as keyword arguments, or by position.

If a min is specified, then output is constrained to items whose keys are greater than or equal to the given min, and, if excludemin is specified and true, is further constrained to items whose keys are strictly greater than min. A min value of None is ignored. If min is None or not specified, and excludemin is true, the item with the smallest key is excluded.

If a max is specified, then output is constrained to items whose keys are less than or equal to the given max, and, if excludemax is specified and true, is further constrained to items whose keys are strictly less than *max. A max value of None is ignored. If max is None or not specified, and excludemax is true, the item with the largest key is excluded.

interface BTrees.Interfaces.IDictionaryIsh[source]

Extends: BTrees.Interfaces.IMinimalDictionary

update(collection)

Add the items from the given collection object to the collection.

The input collection must be a sequence of (key, value) 2-tuples, or an object with an ‘items’ method that returns a sequence of (key, value) pairs.

byValue(minValue)

Return a sequence of (value, key) pairs, sorted by value.

Values < minValue are omitted and other values are “normalized” by the minimum value. This normalization may be a noop, but, for integer values, the normalization is division.

setdefault(key, d)

D.setdefault(k, d) -> D.get(k, d), also set D[k]=d if k not in D.

Return the value like get() except that if key is missing, d is both returned and inserted into the dictionary as the value of k.

Note that, unlike as for Python’s dict.setdefault(), d is not optional. Python defaults d to None, but that doesn’t make sense for mappings that can’t have None as a value (for example, an IIBTree can have only integers as values).

pop(key, d)

D.pop(k[, d]) -> v, remove key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem(): D.popitem() -> (k, v), remove and return some (key, value) pair as a 2-tuple; but raise KeyError if D is empty.

New in version 4.8.0.

interface BTrees.Interfaces.IMerge[source]

Object with methods for merging sets, buckets, and trees.

These methods are supplied in modules that define collection classes with particular key and value types. The operations apply only to collections from the same module. For example, the BTrees.IIBTree.IIBTree.union() can only be used with IIBTree, IIBucket, IISet, and IITreeSet.

The number protocols methods __and__, __or__ and __sub__ are provided by all the data structures. They are shortcuts for intersection(), union() and difference().

The implementing module has a value type. The IOBTree and OOBTree modules have object value type. The IIBTree and OIBTree modules have integer value types. Other modules may be defined in the future that have other value types.

The individual types are classified into set (Set and TreeSet) and mapping (Bucket and BTree) types.

difference(c1, c2)

Return the keys or items in c1 for which there is no key in c2.

If c1 is None, then None is returned. If c2 is None, then c1 is returned.

If neither c1 nor c2 is None, the output is a Set if c1 is a Set or TreeSet, and is a Bucket if c1 is a Bucket or BTree.

While c1 must be one of those types, c2 can be any Python iterable returning the correct types of objects.

Changed in version 4.8.0: Add support for c2 to be an arbitrary iterable.

union(c1, c2)

Compute the Union of c1 and c2.

If c1 is None, then c2 is returned, otherwise, if c2 is None, then c1 is returned.

The output is a Set containing keys from the input collections.

c1 and c2 can be any Python iterables returning the correct type of objects.

Changed in version 4.8.0: Add support for arbitrary iterables.

intersection(c1, c2)

Compute the intersection of c1 and c2.

If c1 is None, then c2 is returned, otherwise, if c2 is None, then c1 is returned.

The output is a Set containing matching keys from the input collections.

c1 and c2 can be any Python iterables returning the correct type of objects.

Changed in version 4.8.0: Add support for arbitrary iterables.

interface BTrees.Interfaces.IIMerge[source]

Extends: BTrees.Interfaces.IMerge

Merge collections with integer value type.

A primary intent is to support operations with no or integer values, which are used as “scores” to rate indiviual keys. That is, in this context, a BTree or Bucket is viewed as a set with scored keys, using integer scores.

weightedUnion(c1, c2, weight1=1, weight2=1)

Compute the weighted union of c1 and c2.

If c1 and c2 are None, the output is (0, None).

If c1 is None and c2 is not None, the output is (weight2, c2).

If c1 is not None and c2 is None, the output is (weight1, c1).

Else, and hereafter, c1 is not None and c2 is not None.

If c1 and c2 are both sets, the output is 1 and the (unweighted) union of the sets.

Else the output is 1 and a Bucket whose keys are the union of c1 and c2’s keys, and whose values are:

v1*weight1 + v2*weight2

where:

  v1 is 0        if the key is not in c1
        1        if the key is in c1 and c1 is a set
        c1[key]  if the key is in c1 and c1 is a mapping

  v2 is 0        if the key is not in c2
        1        if the key is in c2 and c2 is a set
        c2[key]  if the key is in c2 and c2 is a mapping

Note that c1 and c2 must be collections.

weightedIntersection(c1, c2, weight1=1, weight2=1)

Compute the weighted intersection of c1 and c2.

If c1 and c2 are None, the output is (0, None).

If c1 is None and c2 is not None, the output is (weight2, c2).

If c1 is not None and c2 is None, the output is (weight1, c1).

Else, and hereafter, c1 is not None and c2 is not None.

If c1 and c2 are both sets, the output is the sum of the weights and the (unweighted) intersection of the sets.

Else the output is 1 and a Bucket whose keys are the intersection of c1 and c2’s keys, and whose values are:

v1*weight1 + v2*weight2

where:

  v1 is 1        if c1 is a set
        c1[key]  if c1 is a mapping

  v2 is 1        if c2 is a set
        c2[key]  if c2 is a mapping

Note that c1 and c2 must be collections.

interface BTrees.Interfaces.IMergeIntegerKey[source]

Extends: BTrees.Interfaces.IMerge

IMerge-able objects with integer keys.

Concretely, this means the types in IOBTree and IIBTree.

multiunion(seq)

Return union of (zero or more) integer sets, as an integer set.

seq is a sequence of objects each convertible to an integer set. These objects are convertible to an integer set:

An integer, which is added to the union.
A Set or TreeSet from the same module (for example, an BTrees.IIBTree.TreeSet for BTrees.IIBTree.multiunion()). The elements of the set are added to the union.
A Bucket or BTree from the same module (for example, an BTrees.IOBTree.IOBTree for BTrees.IOBTree.multiunion()). The keys of the mapping are added to the union.
Any iterable Python object that iterates across integers. This will be slower than the above types.

The union is returned as a Set from the same module (for example, BTrees.IIBTree.multiunion() returns an BTrees.IIBTree.IISet).

The point to this method is that it can run much faster than doing a sequence of two-input union() calls. Under the covers, all the integers in all the inputs are sorted via a single linear-time radix sort, then duplicates are removed in a second linear-time pass.

Changed in version 4.8.0: Add support for arbitrary iterables of integers.

BTree Family APIs

interface BTrees.Interfaces.ISet[source]

Extends: BTrees.Interfaces.ISetMutable, BTrees.Interfaces.IKeySequence

A set of unique items stored in a single persistent object.

interface BTrees.Interfaces.ITreeSet[source]

Extends: BTrees.Interfaces.ISetMutable

A set of unique items stored in a tree of persistent objects.

interface BTrees.Interfaces.IBTree[source]

Extends: BTrees.Interfaces.IDictionaryIsh

insert(key, value)

Insert a key and value into the collection.

If the key was already in the collection, then there is no change and 0 is returned.

If the key was not already in the collection, then the item is added and 1 is returned.

This method is here to allow one to generate random keys and to insert and test whether the key was there in one operation.

A standard idiom for generating new keys will be:

key = generate_key()
while not t.insert(key, value):
    key=generate_key()

__and__(other): Shortcut for intersection()

__or__(other): Shortcut for union()

__sub__(other): Shortcut for difference()

interface BTrees.Interfaces.IBTreeFamily[source]

the 64-bit or 32-bit family

IF: The IIntegerFloatBTreeModule for this family

II: The IIntegerIntegerBTreeModule for this family

IO: The IIntegerObjectBTreeModule for this family

IU: The IIntegerUnsignedBTreeModule for this family

UF: The IUnsignedFloatBTreeModule for this family

UI: The IUnsignedIntegerBTreeModule for this family

UO: The IUnsignedObjectBTreeModule for this family

UU: The IUnsignedUnsignedBTreeModule for this family

OI: The IObjectIntegerBTreeModule for this family

OO: The IObjectObjectBTreeModule for this family

OU: The IObjectUnsignedBTreeModule for this family

maxint: The maximum signed integer storable in this family

maxuint: The maximum unsigned integer storable in this family

minint: The minimum signed integer storable in this family

There are two families defined:

BTrees.family32 = <BTree family using 32 bits. Supports signed integer values from -2,147,483,648 to 2,147,483,647 and maximum unsigned integer value 4,294,967,295.>: 32-bit BTree family.

BTrees.family64 = <BTree family using 64 bits. Supports signed integer values from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 and maximum unsigned integer value 18,446,744,073,709,551,615.>: 64-bit BTree family.

Module APIs

interface BTrees.Interfaces.IBTreeModule[source]

These are available in all modules (IOBTree, OIBTree, OOBTree, IIBTree, IFBTree, LFBTree, LOBTree, OLBTree, and LLBTree).

BTree

The IBTree for this module.

Also available as [prefix]BTree, as in IOBTree.

Bucket

The leaf-node data buckets used by the BTree.

(IBucket is not currently defined in this file, but is essentially IDictionaryIsh, with the exception of __nonzero__, as of this writing.)

Also available as [prefix]Bucket, as in IOBucket.

TreeSet

The ITreeSet for this module.

Also available as [prefix]TreeSet, as in IOTreeSet.

Set

The ISet for this module: the leaf-node data buckets used by the TreeSet.

Also available as [prefix]BTree, as in IOSet.

interface BTrees.Interfaces.IObjectObjectBTreeModule[source]

Extends: BTrees.Interfaces.IBTreeModule, BTrees.Interfaces.IMerge

Keys, or set values, are objects; values are also objects.

Object keys (and set values) must sort reliably (for instance, not on object id)! Homogenous key types recommended.

Note that there’s no family attribute; all families include the OO flavor of BTrees.

Describes OOBTree

interface BTrees.Interfaces.IIntegerObjectBTreeModule[source]

Extends: BTrees.Interfaces._IMergeBTreeModule

Keys, or set values, are signed ints; values are objects.

Describes IOBTree and LOBTree.

interface BTrees.Interfaces.IObjectIntegerBTreeModule[source]

Extends: BTrees.Interfaces._IMergeBTreeModule

Keys, or set values, are objects; values are signed ints.

Object keys (and set values) must sort reliably (for instance, not on object id)! Homogenous key types recommended.

Describes OIBTree and OLBTree.

interface BTrees.Interfaces.IIntegerIntegerBTreeModule[source]

Extends: BTrees.Interfaces._IMergeBTreeModule, BTrees.Interfaces.IMergeIntegerKey

Keys, or set values, are signed integers; values are signed integers.

Describes IIBTree and LLBTree

interface BTrees.Interfaces.IIntegerFloatBTreeModule[source]

Extends: BTrees.Interfaces._IMergeBTreeModule

Keys, or set values, are signed ints; values are floats.

Describes IFBTree and LFBTree

Utilities

class BTrees.Length.Length(v=0)[source]

Bases: Persistent

BTree lengths are often too expensive to compute.

Objects that use BTrees need to keep track of lengths themselves. This class provides an object for doing this.

As a bonus, the object support application-level conflict resolution.

It is tempting to to assign length objects to __len__ attributes to provide instance-specific __len__ methods. However, this no longer works as expected, because new-style classes cache class-defined slot methods (like __len__) in C type slots. Thus, instance-defined slot fillers are ignored.

__call__(*args)[source]: Return the current length value.

__getstate__()[source]

Get the object serialization state

If the object has no assigned slots and has no instance dictionary, then None is returned.

If the object has no assigned slots and has an instance dictionary, then the a copy of the instance dictionary is returned. The copy has any items with names starting with ‘_v_’ or ‘_p_’ ommitted.

If the object has assigned slots, then a two-element tuple is returned. The first element is either None or a copy of the instance dictionary, as described above. The second element is a dictionary with items for each of the assigned slots.

__init__(v=0)[source]

__setstate__(v)[source]

Set the object serialization state

The state should be in one of 3 forms:

None

Ignored
A dictionary

In this case, the object’s instance dictionary will be cleared and updated with the new state.
A two-tuple with a string as the first element.

In this case, the method named by the string in the first element will be called with the second element.

This form supports migration of data formats.
A two-tuple with None or a Dictionary as the first element and with a dictionary as the second element.

If the first element is not None, then the object’s instance dictionary will be cleared and updated with the value.

The items in the second element will be assigned as attributes.

change(delta)[source]: Add delta to the length value.

set(v)[source]: Set the length value to v.

__dict__ = mappingproxy({'__module__': 'BTrees.Length', '__doc__': 'BTree lengths are often too expensive to compute.\n\n Objects that use BTrees need to keep track of lengths themselves.\n This class provides an object for doing this.\n\n As a bonus, the object support application-level conflict\n resolution.\n\n It is tempting to to assign length objects to __len__ attributes\n to provide instance-specific __len__ methods. However, this no\n longer works as expected, because new-style classes cache\n class-defined slot methods (like __len__) in C type slots. Thus,\n instance-defined slot fillers are ignored.\n ', 'value': 0, '__init__': <function Length.__init__>, '__getstate__': <function Length.__getstate__>, '__setstate__': <function Length.__setstate__>, 'set': <function Length.set>, '_p_resolveConflict': <function Length._p_resolveConflict>, 'change': <function Length.change>, '__call__': <function Length.__call__>, '__dict__': <attribute '__dict__' of 'Length' objects>, '__weakref__': <attribute '__weakref__' of 'Length' objects>, '__annotations__': {}})

__module__ = 'BTrees.Length'

__weakref__: list of weak references to the object

value = 0

Utilities for working with BTrees (TreeSets, Buckets, and Sets) at a low level.

The primary function is check(btree), which performs value-based consistency checks of a kind BTree._Tree._check() does not perform. See the function docstring for details.

display(btree) displays the internal structure of a BTree (TreeSet, etc) to stdout.

CAUTION: When a BTree node has only a single bucket child, it can be impossible to get at the bucket from Python code (__getstate__() may squash the bucket object out of existence, as a pickling storage optimization). In such a case, the code here synthesizes a temporary bucket with the same keys (and values, if the bucket is of a mapping type). This has no first-order consequences, but can mislead if you pay close attention to reported object addresses and/or object identity (the synthesized bucket has an address that doesn’t exist in the actual BTree).

class BTrees.check.Checker(obj)[source]

Bases: Walker

__init__(obj)[source]

check()[source]

check_sorted(obj, path, keys, lo, hi)[source]

complain(msg, obj, path)[source]

visit_btree(obj, path, parent, is_mapping, keys, kids, lo, hi)[source]

visit_bucket(obj, path, parent, is_mapping, keys, values, lo, hi)[source]

__module__ = 'BTrees.check'

class BTrees.check.Printer(obj)[source]

Bases: Walker

__init__(obj)[source]

display()[source]

visit_btree(obj, path, parent, is_mapping, keys, kids, lo, hi)[source]

visit_bucket(obj, path, parent, is_mapping, keys, values, lo, hi)[source]

__annotations__ = {}

__module__ = 'BTrees.check'

class BTrees.check.Walker(obj)[source]

Bases: object

__init__(obj)[source]

visit_btree(obj, path, parent, is_mapping, keys, kids, lo, hi)[source]

visit_bucket(obj, path, parent, is_mapping, keys, values, lo, hi)[source]

walk()[source]

__annotations__ = {}

__dict__ = mappingproxy({'__module__': 'BTrees.check', '__init__': <function Walker.__init__>, 'visit_btree': <function Walker.visit_btree>, 'visit_bucket': <function Walker.visit_bucket>, 'walk': <function Walker.walk>, '__dict__': <attribute '__dict__' of 'Walker' objects>, '__weakref__': <attribute '__weakref__' of 'Walker' objects>, '__doc__': None, '__annotations__': {}})

__module__ = 'BTrees.check'

__weakref__: list of weak references to the object

BTrees.check.check(btree)[source]

Check internal value-based invariants in a BTree or TreeSet.

The BTrees._base._Tree._check method checks internal C-level pointer consistency. The check() function here checks value-based invariants: whether the keys in leaf bucket and internal nodes are in strictly increasing order, and whether they all lie in their expected range. The latter is a subtle invariant that can’t be checked locally – it requires propagating range info down from the root of the tree, and modifying it at each level for each child.

Raises AssertionError if anything is wrong, with a string detail explaining the problems. The entire tree is checked before AssertionError is raised, and the string detail may be large (depending on how much went wrong).

BTrees.check.classify(obj)[source]

BTrees.check.crack_btree(t, is_mapping)[source]

BTrees.check.crack_bucket(b, is_mapping)[source]

BTrees.check.display(btree)[source]: Display the internal structure of a BTree, Bucket, TreeSet or Set.

BTrees.check.type_and_adr(obj)[source]

BTree Data Structure Variants

Integer Keys

Float Values

BTrees.IFBTree.BTree: alias of IFBTree

BTrees.IFBTree.Bucket: alias of IFBucket

class BTrees.IFBTree.IFBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__implemented__ = classImplements(IFBTree, IBTree)

__module__ = 'BTrees.IFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.IFBTree.IFBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(IFBucket, IMinimalDictionary)

__module__ = 'BTrees.IFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IFBTree.IFSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(IFSet, ISet)

__module__ = 'BTrees.IFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IFBTree.IFTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(IFTreeSet, ITreeSet)

__module__ = 'BTrees.IFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.IFBTree.Set: alias of IFSet

BTrees.IFBTree.TreeSet: alias of IFTreeSet

Integer Values

BTrees.IIBTree.BTree: alias of IIBTree

BTrees.IIBTree.Bucket: alias of IIBucket

class BTrees.IIBTree.IIBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IIBTree, IBTree)

__module__ = 'BTrees.IIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.IIBTree.IIBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IIBucket, IMinimalDictionary)

__module__ = 'BTrees.IIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IIBTree.IISet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IISet, ISet)

__module__ = 'BTrees.IIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IIBTree.IITreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IITreeSet, ITreeSet)

__module__ = 'BTrees.IIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.IIBTree.Set: alias of IISet

BTrees.IIBTree.TreeSet: alias of IITreeSet

Object Values

BTrees.IOBTree.BTree: alias of IOBTree

BTrees.IOBTree.Bucket: alias of IOBucket

class BTrees.IOBTree.IOBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(IOBTree, IBTree)

__module__ = 'BTrees.IOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

class BTrees.IOBTree.IOBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(IOBucket, IMinimalDictionary)

__module__ = 'BTrees.IOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IOBTree.IOSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(IOSet, ISet)

__module__ = 'BTrees.IOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IOBTree.IOTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(IOTreeSet, ITreeSet)

__module__ = 'BTrees.IOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

BTrees.IOBTree.Set: alias of IOSet

BTrees.IOBTree.TreeSet: alias of IOTreeSet

Unsigned Integer Values

BTrees.IUBTree.BTree: alias of IUBTree

BTrees.IUBTree.Bucket: alias of IUBucket

class BTrees.IUBTree.IUBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IUBTree, IBTree)

__module__ = 'BTrees.IUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.IUBTree.IUBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IUBucket, IMinimalDictionary)

__module__ = 'BTrees.IUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IUBTree.IUSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IUSet, ISet)

__module__ = 'BTrees.IUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.IUBTree.IUTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(IUTreeSet, ITreeSet)

__module__ = 'BTrees.IUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.IUBTree.Set: alias of IUSet

BTrees.IUBTree.TreeSet: alias of IUTreeSet

Long Integer Keys

Float Values

BTrees.LFBTree.BTree: alias of LFBTree

BTrees.LFBTree.Bucket: alias of LFBucket

class BTrees.LFBTree.LFBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(LFBTree, IBTree)

__module__ = 'BTrees.LFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.LFBTree.LFBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(LFBucket, IMinimalDictionary)

__module__ = 'BTrees.LFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LFBTree.LFSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(LFSet, ISet)

__module__ = 'BTrees.LFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LFBTree.LFTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(LFTreeSet, ITreeSet)

__module__ = 'BTrees.LFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.LFBTree.Set: alias of LFSet

BTrees.LFBTree.TreeSet: alias of LFTreeSet

Long Integer Values

BTrees.LLBTree.BTree: alias of LLBTree

BTrees.LLBTree.Bucket: alias of LLBucket

class BTrees.LLBTree.LLBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LLBTree, IBTree)

__module__ = 'BTrees.LLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.LLBTree.LLBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LLBucket, IMinimalDictionary)

__module__ = 'BTrees.LLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LLBTree.LLSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LLSet, ISet)

__module__ = 'BTrees.LLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LLBTree.LLTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LLTreeSet, ITreeSet)

__module__ = 'BTrees.LLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.LLBTree.Set: alias of LLSet

BTrees.LLBTree.TreeSet: alias of LLTreeSet

Object Values

BTrees.LOBTree.BTree: alias of LOBTree

BTrees.LOBTree.Bucket: alias of LOBucket

class BTrees.LOBTree.LOBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(LOBTree, IBTree)

__module__ = 'BTrees.LOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

class BTrees.LOBTree.LOBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(LOBucket, IMinimalDictionary)

__module__ = 'BTrees.LOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LOBTree.LOSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(LOSet, ISet)

__module__ = 'BTrees.LOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LOBTree.LOTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(LOTreeSet, ITreeSet)

__module__ = 'BTrees.LOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

BTrees.LOBTree.Set: alias of LOSet

BTrees.LOBTree.TreeSet: alias of LOTreeSet

Quad Unsigned Integer Values

BTrees.LQBTree.BTree: alias of LQBTree

BTrees.LQBTree.Bucket: alias of LQBucket

class BTrees.LQBTree.LQBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LQBTree, IBTree)

__module__ = 'BTrees.LQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.LQBTree.LQBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LQBucket, IMinimalDictionary)

__module__ = 'BTrees.LQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LQBTree.LQSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LQSet, ISet)

__module__ = 'BTrees.LQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.LQBTree.LQTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(LQTreeSet, ITreeSet)

__module__ = 'BTrees.LQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.LQBTree.Set: alias of LQSet

BTrees.LQBTree.TreeSet: alias of LQTreeSet

Object Keys

Integer Values

BTrees.OIBTree.BTree: alias of OIBTree

BTrees.OIBTree.Bucket: alias of OIBucket

class BTrees.OIBTree.OIBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OIBTree, IBTree)

__module__ = 'BTrees.OIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

class BTrees.OIBTree.OIBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OIBucket, IMinimalDictionary)

__module__ = 'BTrees.OIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OIBTree.OISet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OISet, ISet)

__module__ = 'BTrees.OIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OIBTree.OITreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OITreeSet, ITreeSet)

__module__ = 'BTrees.OIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

BTrees.OIBTree.Set: alias of OISet

BTrees.OIBTree.TreeSet: alias of OITreeSet

Long Integer Values

BTrees.OLBTree.BTree: alias of OLBTree

BTrees.OLBTree.Bucket: alias of OLBucket

class BTrees.OLBTree.OLBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OLBTree, IBTree)

__module__ = 'BTrees.OLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

class BTrees.OLBTree.OLBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OLBucket, IMinimalDictionary)

__module__ = 'BTrees.OLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OLBTree.OLSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OLSet, ISet)

__module__ = 'BTrees.OLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OLBTree.OLTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OLTreeSet, ITreeSet)

__module__ = 'BTrees.OLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

BTrees.OLBTree.Set: alias of OLSet

BTrees.OLBTree.TreeSet: alias of OLTreeSet

Object Values

BTrees.OOBTree.BTree: alias of OOBTree

BTrees.OOBTree.Bucket: alias of OOBucket

class BTrees.OOBTree.OOBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(OOBTree, IBTree)

__module__ = 'BTrees.OOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 30

class BTrees.OOBTree.OOBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(OOBucket, IMinimalDictionary)

__module__ = 'BTrees.OOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OOBTree.OOSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(OOSet, ISet)

__module__ = 'BTrees.OOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OOBTree.OOTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(OOTreeSet, ITreeSet)

__module__ = 'BTrees.OOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 30

BTrees.OOBTree.Set: alias of OOSet

BTrees.OOBTree.TreeSet: alias of OOTreeSet

Quad Unsigned Integer Values

BTrees.OQBTree.BTree: alias of OQBTree

BTrees.OQBTree.Bucket: alias of OQBucket

class BTrees.OQBTree.OQBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OQBTree, IBTree)

__module__ = 'BTrees.OQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

class BTrees.OQBTree.OQBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OQBucket, IMinimalDictionary)

__module__ = 'BTrees.OQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OQBTree.OQSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OQSet, ISet)

__module__ = 'BTrees.OQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OQBTree.OQTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OQTreeSet, ITreeSet)

__module__ = 'BTrees.OQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

BTrees.OQBTree.Set: alias of OQSet

BTrees.OQBTree.TreeSet: alias of OQTreeSet

Unsigned Integer Values

BTrees.OUBTree.BTree: alias of OUBTree

BTrees.OUBTree.Bucket: alias of OUBucket

class BTrees.OUBTree.OUBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OUBTree, IBTree)

__module__ = 'BTrees.OUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

class BTrees.OUBTree.OUBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OUBucket, IMinimalDictionary)

__module__ = 'BTrees.OUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OUBTree.OUSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OUSet, ISet)

__module__ = 'BTrees.OUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.OUBTree.OUTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(OUTreeSet, ITreeSet)

__module__ = 'BTrees.OUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 250

max_leaf_size = 60

BTrees.OUBTree.Set: alias of OUSet

BTrees.OUBTree.TreeSet: alias of OUTreeSet

Quad Unsigned Integer Keys

Float Values

BTrees.QFBTree.BTree: alias of QFBTree

BTrees.QFBTree.Bucket: alias of QFBucket

class BTrees.QFBTree.QFBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(QFBTree, IBTree)

__module__ = 'BTrees.QFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.QFBTree.QFBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(QFBucket, IMinimalDictionary)

__module__ = 'BTrees.QFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QFBTree.QFSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(QFSet, ISet)

__module__ = 'BTrees.QFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QFBTree.QFTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(QFTreeSet, ITreeSet)

__module__ = 'BTrees.QFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.QFBTree.Set: alias of QFSet

BTrees.QFBTree.TreeSet: alias of QFTreeSet

Long Integer Values

BTrees.QLBTree.BTree: alias of QLBTree

BTrees.QLBTree.Bucket: alias of QLBucket

class BTrees.QLBTree.QLBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QLBTree, IBTree)

__module__ = 'BTrees.QLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.QLBTree.QLBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QLBucket, IMinimalDictionary)

__module__ = 'BTrees.QLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QLBTree.QLSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QLSet, ISet)

__module__ = 'BTrees.QLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QLBTree.QLTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QLTreeSet, ITreeSet)

__module__ = 'BTrees.QLBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.QLBTree.Set: alias of QLSet

BTrees.QLBTree.TreeSet: alias of QLTreeSet

Object Values

BTrees.QOBTree.BTree: alias of QOBTree

BTrees.QOBTree.Bucket: alias of QOBucket

class BTrees.QOBTree.QOBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(QOBTree, IBTree)

__module__ = 'BTrees.QOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

class BTrees.QOBTree.QOBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(QOBucket, IMinimalDictionary)

__module__ = 'BTrees.QOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QOBTree.QOSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(QOSet, ISet)

__module__ = 'BTrees.QOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QOBTree.QOTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(QOTreeSet, ITreeSet)

__module__ = 'BTrees.QOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

BTrees.QOBTree.Set: alias of QOSet

BTrees.QOBTree.TreeSet: alias of QOTreeSet

Quad Unsigned Integer Values

BTrees.QQBTree.BTree: alias of QQBTree

BTrees.QQBTree.Bucket: alias of QQBucket

class BTrees.QQBTree.QQBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QQBTree, IBTree)

__module__ = 'BTrees.QQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.QQBTree.QQBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QQBucket, IMinimalDictionary)

__module__ = 'BTrees.QQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QQBTree.QQSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QQSet, ISet)

__module__ = 'BTrees.QQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.QQBTree.QQTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(QQTreeSet, ITreeSet)

__module__ = 'BTrees.QQBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

BTrees.QQBTree.Set: alias of QQSet

BTrees.QQBTree.TreeSet: alias of QQTreeSet

Unsigned Integer Keys

Float Values

BTrees.UFBTree.BTree: alias of UFBTree

BTrees.UFBTree.Bucket: alias of UFBucket

BTrees.UFBTree.Set: alias of UFSet

BTrees.UFBTree.TreeSet: alias of UFTreeSet

class BTrees.UFBTree.UFBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(UFBTree, IBTree)

__module__ = 'BTrees.UFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.UFBTree.UFBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(UFBucket, IMinimalDictionary)

__module__ = 'BTrees.UFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UFBTree.UFSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(UFSet, ISet)

__module__ = 'BTrees.UFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UFBTree.UFTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1.0

__annotations__ = {}

__implemented__ = classImplements(UFTreeSet, ITreeSet)

__module__ = 'BTrees.UFBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

Integer Values

BTrees.UIBTree.BTree: alias of UIBTree

BTrees.UIBTree.Bucket: alias of UIBucket

BTrees.UIBTree.Set: alias of UISet

BTrees.UIBTree.TreeSet: alias of UITreeSet

class BTrees.UIBTree.UIBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UIBTree, IBTree)

__module__ = 'BTrees.UIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.UIBTree.UIBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UIBucket, IMinimalDictionary)

__module__ = 'BTrees.UIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UIBTree.UISet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UISet, ISet)

__module__ = 'BTrees.UIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UIBTree.UITreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UITreeSet, ITreeSet)

__module__ = 'BTrees.UIBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

Object Values

BTrees.UOBTree.BTree: alias of UOBTree

BTrees.UOBTree.Bucket: alias of UOBucket

BTrees.UOBTree.Set: alias of UOSet

BTrees.UOBTree.TreeSet: alias of UOTreeSet

class BTrees.UOBTree.UOBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(UOBTree, IBTree)

__module__ = 'BTrees.UOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

class BTrees.UOBTree.UOBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(UOBucket, IMinimalDictionary)

__module__ = 'BTrees.UOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UOBTree.UOSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(UOSet, ISet)

__module__ = 'BTrees.UOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UOBTree.UOTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = None

__annotations__ = {}

__implemented__ = classImplements(UOTreeSet, ITreeSet)

__module__ = 'BTrees.UOBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 60

Unsigned Integer Values

BTrees.UUBTree.BTree: alias of UUBTree

BTrees.UUBTree.Bucket: alias of UUBucket

BTrees.UUBTree.Set: alias of UUSet

BTrees.UUBTree.TreeSet: alias of UUTreeSet

class BTrees.UUBTree.UUBTree(*args)

Bases: Tree

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UUBTree, IBTree)

__module__ = 'BTrees.UUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120

class BTrees.UUBTree.UUBucket(items=None)

Bases: Bucket

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UUBucket, IMinimalDictionary)

__module__ = 'BTrees.UUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UUBTree.UUSet(items=None)

Bases: Set

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UUSet, ISet)

__module__ = 'BTrees.UUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

class BTrees.UUBTree.UUTreeSet(*args)

Bases: TreeSet

MERGE(value1, weight1, value2, weight2)

MERGE_WEIGHT(item, weight)

Apply a weight multiplier to item.

Used when merging data structures. The item will be a value.

MERGE_DEFAULT = 1

__annotations__ = {}

__implemented__ = classImplements(UUTreeSet, ITreeSet)

__module__ = 'BTrees.UUBTree'

__provides__

Special descriptor for class __provides__

The descriptor caches the implementedBy info, so that we can get declarations for objects without instance-specific interfaces a bit quicker.

max_internal_size = 500

max_leaf_size = 120