成功解决pandas\core\indexing.py:179: SettingWithCopyWarning: A value is trying to be set on a copy of a

简介: 成功解决pandas\core\indexing.py:179: SettingWithCopyWarning: A value is trying to be set on a copy of a

解决问题


pandas\core\indexing.py:179: SettingWithCopyWarning:

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



解决思路


错误地址:pandas\core\indexing.py:179

设置复制警告:试图在DataFrame切片的副本上设置一个值


See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html   #indexing-view-versus-copy

 self._setitem_with_indexer(indexer, value)


解决方法


此信息提示为警告,而不是error,即使不处理也不会影响代码编程的运行。如果想要去掉,可以更新库至最新版本!

然后根据要求提示修改使用方法!

在进行 a copy of a slice from a DataFrame时,该方法不再推荐使用!需要从http://pandas.pydata.org/pandas-docs/stable/indexing.html 文档查看最新的调用方法!


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