Returns a uw_sws.models.Registration object
    for the section and regid passed in.

def get_credits_by_section_and_regid(section, regid):
    """
    Returns a uw_sws.models.Registration object
    for the section and regid passed in.
    """
    deprecation("Use get_credits_by_reg_url")
    # note trailing comma in URL, it's required for the optional dup_code param
    url = "{}{},{},{},{},{},{},.json".format(
        reg_credits_url_prefix,
        section.term.year,
        section.term.quarter,
        re.sub(' ', '%20', section.curriculum_abbr),
        section.course_number,
        section.section_id,
        regid
    )

    reg_data = get_resource(url)

    try:
        return Decimal(reg_data['Credits'].strip())
    except InvalidOperation:
        pass