def check_url( url ):

    """check_url --- Check the syntax of a url format and return False

    if the syntax is bad and True if the syntax is good.

    (bool) bool check_url( (string) url )"""

    from re import compile, match

    regexp = compile( '^(f|ht)tps?://.+\..+/?' )

    if regexp.match( url ) != None:

        return True

    else:

        return False