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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 exists_course_list(curriculum_abbr, course_number, section_id, quarter, year, joint=False):
 """ Return True if the corresponding mailman list exists for the course """

    return exists(get_course_list_name(curriculum_abbr, course_number,
                                       section_id, quarter, year, joint))