validators.py 文件源码

def istime(value, fmt):
    """
    Return whether or not given value is valid time according to given format.
    If the value is valid time, this function returns ``True``, otherwise ``False``.

    Examples::

        >>> istime('30 Nov 00', '%d %b %y')
        True

        >>> istime('Friday', '%d')
        False

    :param value: string to validate time
    :param fmt: format of time
    """
    try:
        time_obj = time.strptime(value, fmt)
    except ValueError:
        return False
    return True