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問題描述：
pip安裝庫檔案時報錯：You are using pip version 10.0.1, however version 18.0 is available.
You should consider upgrading via the ‘python -m pip install –upgrade pip’ command.

此時按照提示執行命令python -m pip install –upgrade pip
下載到最後報錯Could not install packages due to an EnvironmentError: [WinError 5] 拒絕訪問

解決辦法：
更新指令中加上–user
python -m pip install –user –upgrade pip==18.0

最終檢視是否更新完成
pip list