parameters: ()
return_statement: return (code.co_filename, f.f_lineno)
docstring: Returns (filename, linenumber) for the stack frame.
docstring_summary: Returns (filename, linenumber) for the stack frame.
docstring_tokens: Returns ( filename linenumber ) for the stack frame .
function: def _get_file_and_line():
    """Returns (filename, linenumber) for the stack frame."""
    code, f = _get_caller()
    if not code:
      return ('<unknown>', 0)
    return (code.co_filename, f.f_lineno)
function_tokens: def _get_file_and_line ( ) : code , f = _get_caller ( ) if not code : return ( '<unknown>' , 0 ) return ( code . co_filename , f . f_lineno )