Pycharm 出现提示:
Pycharm
this inspection dects names that should resolve but don't.Due to dynamic dispath and duck typing ,this possible in a limited but useful number of cases.Top-level class level items are supported better than instance items
走同样的路，发现不同的人生
函数名称写错了，是power4
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函数名称写错了，是power4