human
I wrote the below code

    field_data_cache = FieldDataCache.cache_for_descriptor_descendents(course_id, student, module_descriptor)
    student_data = KvsFieldData(DjangoKeyValueStore(field_data_cache))
    request_info = (xmodule_instance_args.get('request_info', {}) if (xmodule_instance_args is not None) else {})
    task_info = {'student': student.username, 'task_id': _get_task_id_from_xmodule_args(xmodule_instance_args)}
    def make_track_function():
        '\n                                Make    a    tracking    function    that    logs    what    happened.\n\n                                For    insertion    into    ModuleSystem,    and    used    by    CapaModule,    which    will\n                                provide    the    event_type    (as    string)    and    event    (as    dict)    as    arguments.\n                                The    request_info    and    task_info    (and    page)    are    provided    here.\n                                '
        return (lambda event_type, event: task_track(request_info, task_info, event_type, event, page='x_module_task'))
    xqueue_callback_url_prefix = (xmodule_instance_args.get('xqueue_callback_url_prefix', '') if (xmodule_instance_args is not None) else '')
    return get_module_for_descriptor_internal(user=student, descriptor=module_descriptor, student_data=student_data, course_id=course_id, track_function=make_track_function(), xqueue_callback_url_prefix=xqueue_callback_url_prefix, grade_bucket_type=grade_bucket_type, request_token=None, course=course)

What's a good function header?
 ... Give me a Python program to fix = (xmodule_instance_args?
assistant
#Here is Python program to fix = (xmodule_instance_args.

def _get_module_instance_for_task(course_id, student, module_descriptor, xmodule_instance_args=None, grade_bucket_type=None, course=None):