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DON'T USE THIS MODULE DIRECTLY! The classes here should be imported
via collections; they are defined here only to alleviate certain
bootstrapping issues. Unit tests are in test_collections.
i����( t ABCMetat abstractmethodNt Hashablet Iterablet Iteratort Sizedt Containert Callablet Sett
MutableSett Mappingt MutableMappingt MappingViewt KeysViewt ItemsViewt
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t � d S( sK Return the next item from the iterator. When exhausted, raise StopIterationN( t
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methods except for __contains__, __iter__ and __len__.
To override the comparisons (presumably for speed, as the
semantics are fixed), redefine __le__ and __ge__,
then the other operations will automatically follow suit.
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| | � S( s� Construct an instance of the class from any iterable input.
Must override this method if the class constructor signature
does not accept an iterable for an input.
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} n | S( s+ Compute the hash value of a set.
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call this function.
This must be compatible __eq__.
All sets ought to compare equal if they contain the same
elements, regardless of how they are implemented, and
regardless of the order of the elements; so there's not much
freedom for __eq__ or __hash__. We match the algorithm used
by the built-in frozenset type.
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RS( s� A MutableMapping is a generic container for associating
key/value pairs.
This class provides concrete generic implementations of all
methods except for __getitem__, __setitem__, __delitem__,
__iter__, and __len__.
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Concrete subclasses must override __new__ or __init__,
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Concrete subclasses must provide __new__ or __init__,
__getitem__, __setitem__, __delitem__, __len__, and insert().
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Raise ValueError if the value is not present.
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