Mass Deface 1: raise TypeError, "pop expected at most 2 arguments, got "\ + repr(1 + len(args)) try: value = self[key] except KeyError: if args: return args[0] raise del self[key] return value def popitem(self): try: k, v = self.iteritems().next() except StopIteration: raise KeyError, 'container is empty' del self[k] return (k, v) def update(self, other=None, **kwargs): # Make progressively weaker assumptions about "other" if other is None: pass elif hasattr(other, 'iteritems'): # iteritems saves memory and lookups for k, v in other.iteritems(): self[k] = v elif hasattr(other, 'keys'): for k in other.keys(): self[k] = other[k] else: for k, v in other: self[k] = v if kwargs: self.update(kwargs) def get(self, key, default=None): try: return self[key] except KeyError: return default def __repr__(self): return repr(dict(self.iteritems())) def __cmp__(self, other): if other is None: return 1 if isinstance(other, DictMixin): other = dict(other.iteritems()) return cmp(dict(self.iteritems()), other) def __len__(self): return len(self.keys())