python - 如何反转数据框熊猫中特定行的值

Question

ii=0 ...jj=0 ...for i, row in new_df.iterrows():
z=len(row)-1
k=row
ii=ii+1
jj=0
##print(k.iloc[0])
for j, column in row.iteritems():
    z=z-1
    jj=jj+1
    if z>23:
        new_df.loc[ii][jj],k.iloc[z]=k.iloc[z],new_df.iloc[ii][jj]

我试过运行它，但它给出了错误......

:13: SettingWithCopyWarning: 
A value is trying to be set on a copy of a slice from a DataFrame

请参阅文档中的注意事项。

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