python m pip install –upgrade pip 解决升级不成功问题

使用pip 提示更新: You are using pip version 18.1, however version 20.0.2 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' command. 输入 python -m pip install --upgrade pip出现问题 这是因为服务器连接超时,使用下方代码即可解决(因为pip源在国外,所以连起来比较慢,可以改用国内的源) python -m pip install --upgrade pip -i