'latin-1' codec can't encode characters in position 10-11: Body ('中国') is not valid Latin-1. Use body.encode('utf-8') if you want to send it encoded in UTF-8.
您可以参照此博客https://blog.csdn.net/u014744494/article/details/41986647尝试一下。
或者再试试这个 https://blog.csdn.net/Dongyingying518/article/details/95586822 跟您的问题比较类似
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