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How to deal with SettingWithCopyWarning in Pandas（20个答案）
3天前关闭。
Dataframe 调用条件生成以下输出：

SUBJID                                    LBSPCCND    LBSPCCND_OTHER
0   0292-104                           Adequate specimen                  
1   1749-101                                       Other    Limited Sample
2   1733-104  Paraffin block; paraffin-embedded specimen                  
3   0587-102                                       Other  Pathology Report
4   0130-101                           Adequate specimen                  
5   0587-101                           Adequate specimen                  
6   0609-102                                       Other      Unacceptable

当我运行下面的代码时，我得到一个带有copywarning的设置：

condition["LBSPCCND"] = condition["LBSPCCND"].apply(convert_condition) 
condition

      SUBJID           LBSPCCND    LBSPCCND_OTHER
0   0292-104           ADEQUATE                  
1   1749-101              Other    Limited Sample
2   1733-104  PARAFFIN-EMBEDDED                  
3   0587-102              Other  Pathology Report
4   0130-101           ADEQUATE                  
5   0587-101           ADEQUATE                  
6   0609-102              Other      Unacceptable

这将生成以下错误：

SettingWithCopyWarning: 
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead