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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 create(self, url):
 """Create a bucket, directory, or empty file."""

        bucket, obj_key = _parse_url(url)

        if not bucket:
            raise InvalidURL(url,
                             "You must specify a bucket and (optional) path")

        if obj_key:
            target = "/".join((bucket, obj_key))
        else:
            target = bucket

        return self.call("CreateBucket", bucket=target)