“You are using pip version 19.0.3, however version 20.0.2 is available.”pip 更新报错解决办法

“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。