<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_users(username):
 """ Fetch data from username in .id namespace """

    reply = {}

    log.debug('Begin /v[x]/users/' + username)

    if username is None:
        reply['error'] = "No username given"
        return jsonify(reply), 404

    if ',' in username:
        reply['error'] = 'Multiple username queries are no longer supported.'
        return jsonify(reply), 401


    if "." not in username:
        fqa = "{}.{}".format(username, 'id')
    else:
        fqa = username

    profile = get_profile(fqa)

    reply[username] = profile
    if 'error' in profile:
        status_code = 200
        if 'status_code' in profile:
            status_code = profile['status_code']
            del profile['status_code']
        return jsonify(reply), status_code
    else:
        return jsonify(reply), 200