Python之版本相争

在Ubuntu 20 版本的时候，不支持直接下载python2的pip ,所以，有下面的解决方法

  1. Start by enabling the universe repository:

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    sudo add-apt-repository universe

  2. Update the packages index and install Python 2:

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    sudo apt update
    sudo apt install python2

  3. Use curl to download the get-pip.py script:

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    curl https://bootstrap.pypa.io/get-pip.py --output get-pip.py

  4. Once the repository is enabled, run the script as sudo user with python2 to install pip :

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    sudo python2 get-pip.py

  5. Verify the installation

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    pip2 --version