A value is trying to be set on a copy of a slice from a DataFrame.
讀取完csv文件，進行運算，從新複製彈出A value is trying to be set on a copy of a slice from a DataFrame.學習
解決方法以下：blog
我的理解是這裏的變量引用是直接尋址，不容許改變原變量的值，要將原變量的值複製出來，進行運算。我的理解，有錯誤還請指出學習一下變量
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