parameters: (self, cat=None)
return_statement: return self._dict_members[cat]
docstring: For given category a dictionary is returned mapping member names to
          members of that category.  For names that are duplicated the name is
          mapped to None.
docstring_summary: For given category a dictionary is returned mapping member names to
          members of that category.  For names that are duplicated the name is
          mapped to None.
docstring_tokens: For given category a dictionary is returned mapping member names to members of that category . For names that are duplicated the name is mapped to None .
function: def _get_dict_members(self, cat=None):
          """
          For given category a dictionary is returned mapping member names to
          members of that category.  For names that are duplicated the name is
          mapped to None.
          """
          self.confirm_no_error()
          if cat not in self._dict_members:
              new_dict = {}
              for mem in self.in_category(cat):
                  if mem.name() not in new_dict:
                      new_dict[mem.name()] = mem
                  else:
                      new_dict[mem.name()] = self.Duplicate
              self._dict_members[cat] = new_dict
          return self._dict_members[cat]
function_tokens: def _get_dict_members ( self , cat = None ) : self . confirm_no_error ( ) if cat not in self . _dict_members : new_dict = { } for mem in self . in_category ( cat ) : if mem . name ( ) not in new_dict : new_dict [ mem . name ( ) ] = mem else : new_dict [ mem . name ( ) ] = self . Duplicate self . _dict_members [ cat ] = new_dict return self . _dict_members [ cat ]