Python错误：NoneType对象不是subscriptab

Question

我删去了代码，只显示了我认为与以下错误相关的部分。这是在Python3.x中完成的，因为我正试图自学，所以我以前没有任何Python2.x的经验

谢谢！在

Traceback (most recent call last):
File "rpcombat_refactored.py", line 306, in <module> shopping = buy_equipment()
File "rpcombat_refactored.py", line 242, in buy_equipment
print("You have a", join_with_and(profile['inventory']), "in your bag.")
File "rpcombat_refactored.py", line 94, in join_with_and elif sequence < 1:
TypeError: unorderable types: list() < int()

代码：

^{pr2}$

Answer 1

您的generate_rpc方法不返回配置文件。它什么也不返回。所以profile不是None。在