“You are using pip version 19.0.3, however version 20.0.2 is available.”pip 更新报错解决办法
执行更新语句时报错如下：
解决办法：使用国内的源下载：
python -m pip install --upgrade pip -i https://pypi.douban.com/simple
pip更新成功。
“You are using pip version 19.0.3, however version 20.0.2 is available.”pip 更新报错解决办法
原文：https://www.cnblogs.com/helloLuoLuo/p/12468732.html