parameters: (self)
return_statement: return self.num_rows()
docstring: Returns the number of rows of the sframe.
docstring_summary: Returns the number of rows of the sframe.
docstring_tokens: Returns the number of rows of the sframe .
function: def __len__(self):
          """
          Returns the number of rows of the sframe.
          """
          return self.num_rows()
function_tokens: def __len__ ( self ) : return self . num_rows ( )