@api.route('/login', methods=['POST'])
def login():
    if current_user.is_authenticated():
        return jsonify(flag='success')

    username = request.form.get('username')
    password = request.form.get('password')
    if username or password:
        user, authenticated = User.authenticate(username, password)
        if user and authenticated:
            if login_user(user, remember='y'):
                return jsonify(flag='success')

    current_app.logger.debug('login(api) failed, username: %s.' % username)
    return jsonify(flag='fail', msg='Sorry, try again.')
dataset/ETHPy150Open imwilsonxu/fbone/fbone/api/views.py/login/operator `and` -> `or`