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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 _log_submission(submission, student_item):
 """ Log the creation of a submission. Args: submission (dict):
 The serialized submission model. student_item (dict):
 The serialized student item model. Returns: None """

    logger.info(
        u"Created submission uuid={submission_uuid} for "
        u"(course_id={course_id}, item_id={item_id}, "
        u"anonymous_student_id={anonymous_student_id})"
        .format(
            submission_uuid=submission["uuid"],
            course_id=student_item["course_id"],
            item_id=student_item["item_id"],
            anonymous_student_id=student_item["student_id"]
        )
    )