@app.route('/api/users/<int:user_id>', methods=['PUT'])
def put_user(user_id):
    user = {
        'id': user_id,
        'login': request.json['login'],
        'password': request.json['password'],
    }
    cursor.execute('UPDATE USERS SET login=?, password=? WHERE id=?', (user['login'], user['password'], user['id']))
    connection.commit()
    return jsonify(user), 200