| # 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 | 
 |         return copy.copy(self) | 
 |     def keys(self): return self.data.keys() | 
 |     def items(self): return self.data.items() | 
 |     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.data[k] = v | 
 |     def get(self, key, failobj=None): | 
 |         return self.data.get(key, failobj) |