cpython-withatomic / Lib / UserDict.py

The branch '2.2' does not exist.
"""A more or less complete user-defined wrapper around dictionary objects."""

class UserDict:
    def __init__(self, dict=None):
        self.data = {}
        if dict is not None: self.update(dict)
    def __repr__(self): return repr(self.data)
    def __cmp__(self, dict):
        if isinstance(dict, UserDict):
            return cmp(self.data, dict.data)
        else:
            return cmp(self.data, dict)
    def __len__(self): return len(self.data)
    def __getitem__(self, key): return self.data[key]
    def __setitem__(self, key, item): self.data[key] = item
    def __delitem__(self, key): del self.data[key]
    def clear(self): self.data.clear()
    def copy(self):
        if self.__class__ is UserDict:
            return UserDict(self.data)
        import copy
        data = self.data
        try:
            self.data = {}
            c = copy.copy(self)
        finally:
            self.data = data
        c.update(self)
        return c
    def keys(self): return self.data.keys()
    def items(self): return self.data.items()
    def iteritems(self): return self.data.iteritems()
    def iterkeys(self): return self.data.iterkeys()
    def itervalues(self): return self.data.itervalues()
    def values(self): return self.data.values()
    def has_key(self, key): return self.data.has_key(key)
    def update(self, dict):
        if isinstance(dict, UserDict):
            self.data.update(dict.data)
        elif isinstance(dict, type(self.data)):
            self.data.update(dict)
        else:
            for k, v in dict.items():
                self[k] = v
    def get(self, key, failobj=None):
        if not self.has_key(key):
            return failobj
        return self[key]
    def setdefault(self, key, failobj=None):
        if not self.has_key(key):
            self[key] = failobj
        return self[key]
    def popitem(self):
        return self.data.popitem()
    def __contains__(self, key):
        return key in self.data

class IterableUserDict(UserDict):
    def __iter__(self):
        return iter(self.data)
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