human
Complete this python program:
def _has_access_course(user, action, courselike):
assistant
#Here is the Python code you requested.

    """Check if user has access to a course.
    Arguments:
    user (User): the user whose course access we are checking.
    action (string): The action that is being checked.
    courselike (CourseDescriptor or CourseOverview): The object
    representing the course that the user wants to access.
    Valid actions:
    \load\ -- load the courseware, see inside the course
    \load_forum\ -- can load and contribute to the forums (one access level for now)
    \load_mobile\ -- can load from a mobile context
    \enroll\ -- enroll.  Checks for enrollment window.
    \see_exists\ -- can see that the course exists.
    \staff\ -- staff access to course.
    \see_in_catalog\ -- user is able to see the course listed in the course catalog.
    \see_about_page\ -- user is able to see the course about page.
    """
    def can_load():
        '\n                                Can    this    user    load    this    course?\n\n                                NOTE:    this    is    not    checking    whether    user    is    actually    enrolled    in    the    course.\n                                '
        response = (_visible_to_nonstaff_users(courselike) and check_course_open_for_learner(user, courselike) and _can_view_courseware_with_prerequisites(user, courselike))
        return (ACCESS_GRANTED if (response or _has_staff_access_to_descriptor(user, courselike, courselike.id)) else response)
    def can_enroll():
        '\n                                Returns    whether    the    user    can    enroll    in    the    course.\n                                '
        return _can_enroll_courselike(user, courselike)
    def see_exists():
        "\n                                Can    see    if    can    enroll,    but    also    if    can    load    it:    if    user    enrolled    in    a    course    and    now\n                                it's    past    the    enrollment    period,    they    should    still    see    it.\n                                "
        return (ACCESS_GRANTED if (can_load() or can_enroll()) else ACCESS_DENIED)
    def can_see_in_catalog():
        '\n                                Implements    the    "can    see    course    in    catalog"    logic    if    a    course    should    be    visible    in    the    main    course    catalog\n                                In    this    case    we    use    the    catalog_visibility    property    on    the    course    descriptor\n                                but    also    allow    course    staff    to    see    this.\n                                '
        return (_has_catalog_visibility(courselike, CATALOG_VISIBILITY_CATALOG_AND_ABOUT) or _has_staff_access_to_descriptor(user, courselike, courselike.id))
    def can_see_about_page():
        '\n                                Implements    the    "can    see   ...