解决 pip3 更新的问题: You should consider upgrading via the ‘pip install --upgrade pip‘ command._pip3 不检查更新

1. 报错

pip3 install xxxx 会出现下面的问题:
You should consider upgrading via the 'pip install --upgrade pip' command.

2. 解决

依次运行下面的代码:

pip install --upgrade pip;
python -m pip install --upgrade pip;
pip3 install --upgrade pip;

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更新速度慢用下面的语句

pip install -i https://pypi.douban.com/simple --upgrade pip;
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若报错：

Consider using the --user option or check the permissions.
需要添加 --user

pip install --user --upgrade pip;
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若报错：

ModuleNotFoundError: No module named 'pip'
执行下面的语句

python -m ensurepip;
python -m pip install --upgrade pip;
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