Function isfirstline

Lib/fileinput.py:153–160

Returns true the line just read is the first line of its file, otherwise returns false.

()

    return _state.fileno()

def isfirstline():
    """
    Returns true the line just read is the first line of its file,
    otherwise returns false.
    """
    if not _state:
        raise RuntimeError("no active input()")
    return _state.isfirstline()

def isstdin():
    """