parameters: (self)
return_statement: return len(self.keys())
docstring: Dictionary style len(x) support.
docstring_summary: Dictionary style len(x) support.
docstring_tokens: Dictionary style len ( x ) support .
function: def __len__(self):
          """Dictionary style len(x) support."""
          return len(self.keys())
function_tokens: def __len__ ( self ) : return len ( self . keys ( ) )