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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 reviews(self):
 """Customer Reviews. Get a iframe URL for customer reviews. :return: A tuple of: has_reviews (bool), reviews url (string) """

        iframe = self._safe_get_element_text('CustomerReviews.IFrameURL')
        has_reviews = self._safe_get_element_text('CustomerReviews.HasReviews')
        if has_reviews is not None and has_reviews == 'true':
            has_reviews = True
        else:
            has_reviews = False
        return has_reviews, iframe