parameters: (self, key)
return_statement: return key in self._type_converter and key in self._dict
docstring: Does the mapping contain the given key.
docstring_summary: Does the mapping contain the given key.
docstring_tokens: Does the mapping contain the given key .
function: def __contains__(self, key):
          """Does the mapping contain the given key."""
          return key in self._type_converter and key in self._dict
function_tokens: def __contains__ ( self , key ) : return key in self . _type_converter and key in self . _dict