you are using pip version 19.2.3,however 20.2.2 is available

1.Python-pip使用时提示“you are using pip version 19.2.3,however 20.2.2 is available”

警告：您使用的是pip版本19.2.3，但是版本20.2.2可用。您应该考虑通过'python-mpipinstall–upgrade pip'命令进行升级。

2.使用pip安装cairoffi时爆出错误“python setup.py egg_info Check the logs for full command output.”

需要更新setuptools才能生效

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