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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 _make_url(self, url_part, blueprint_prefix):
 """Create URL from blueprint_prefix, api prefix and resource url. This method is used to defer the construction of the final url in the case that the Api is created with a Blueprint. :param url_part: The part of the url the endpoint is registered with :param blueprint_prefix: The part of the url contributed by the blueprint. Generally speaking, BlueprintSetupState.url_prefix """

        parts = (blueprint_prefix, self.prefix, url_part)
        return ''.join(_ for _ in parts if _)