def not_found(url, wait=10):

    """ Returns True when the url generates a "404 Not Found" error.
    """

    try: connection = open(url, wait)
    except HTTP404NotFound:
        return True
    except:
        return False

    return False
def not_found(url, wait=10):

    """ Returns True when the url generates a "404 Not Found" error.
    """

    try: connection = open(url, wait)
    except HTTP404NotFound:
        return True
    except:
        return False

    return False
def not_found ( url , wait = 10 ) : try : connection = open ( url , wait ) except HTTP404NotFound : return True except : return False return False
Returns True when the url generates a "404 Not Found" error.
Returns True when the url generates a 404 Not Found error .