Module weakref :: Class WeakKeyDictionary
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Class WeakKeyDictionary

UserDict --+
           |
          WeakKeyDictionary

Known Subclasses:
LazyAssociation, ReferenceBuffer

Mapping class that references keys weakly.

Entries in the dictionary will be discarded when there is no longer a strong reference to the key. This can be used to associate additional data with an object owned by other parts of an application without adding attributes to those objects. This can be especially useful with objects that override attribute accesses.
Method Summary
  __init__(self, dict)
  __contains__(self, key)
  __delitem__(self, key)
  __getitem__(self, key)
  __iter__(self)
  __repr__(self)
  __setitem__(self, key, value)
  copy(self)
  get(self, key, default)
  has_key(self, key)
  items(self)
  iteritems(self)
  iterkeys(self)
  itervalues(self)
  keys(self)
  pop(self, key, *args)
  popitem(self)
  setdefault(self, key, default)
  update(self, dict)
    Inherited from UserDict
  __cmp__(self, dict)
  __len__(self)
  clear(self)
  fromkeys(cls, iterable, value)
(Class method)
  values(self)

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