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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def check_is_spam(content, content_object, request, backends=None):
 """ Return True if the content is a spam, else False. """

    if backends is None:
        backends = SPAM_CHECKER_BACKENDS

    for backend_path in backends:
        spam_checker = get_spam_checker(backend_path)
        if spam_checker is not None:
            is_spam = spam_checker(content, content_object, request)
            if is_spam:
                return True

    return False