python 報錯 pip安裝三方庫不成功:WARNING: You are using pip version 20.2.3; however, version 20.2.4 is available

本來是想下載下傳requests子產品，結果安裝時pip報錯，解決報錯問題之後，順便安裝requests子產品，驗證問題是否成功解決

1.解決pip安裝三方庫不成功

pip安裝三方庫不成功:WARNING: You are using pip version 20.2.3; however, version 20.2.4 is available.

You should consider upgrading via the ‘c:\users\lenovo\appdata\local\programs\python\python37\python.exe -m pip install --upgrade pip’ command.

原因：pip版本過低導緻安裝第三方庫失敗

解決方法：

在cmd中輸入： easy_install -U pip

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