parameters: ()
return_statement: return _state.isstdin()
docstring: Returns true if the last line was read from sys.stdin,
      otherwise returns false.
docstring_summary: Returns true if the last line was read from sys.stdin,
      otherwise returns false.
docstring_tokens: Returns true if the last line was read from sys . stdin otherwise returns false .
function: def isstdin():
      """
      Returns true if the last line was read from sys.stdin,
      otherwise returns false.
      """
      if not _state:
          raise RuntimeError("no active input()")
      return _state.isstdin()
function_tokens: def isstdin ( ) : if not _state : raise RuntimeError ( "no active input()" ) return _state . isstdin ( )