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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 get_record(uid=None):
 """Get a single record """

    obj = None
    if uid is not None:
        obj = get_object_by_uid(uid)
    else:
        obj = get_object_by_request()
    if obj is None:
        fail(404, "No object found")
    complete = req.get_complete(default=_marker)
    if complete is _marker:
        complete = True
    items = make_items_for([obj], complete=complete)
    return u.first(items)