1. Uninstall the previous pip #
pip install --upgrade pip
# You'll find pip uninstalled, but the update failed
# 2. Download the latest version pip pip
https://files.pythonhosted.org/packages/8e/76/66066b7bc71817238924c7e4b448abdb17eb0c92d645769c223f9ace478f/pip-20.0.2.tar.gz
3. Extract # installation directory corresponding to the python
D:\Python3.7.6\Lib\site-packages
# 4. execution command-line switch to this directory
python setup.py install # start the installation pip
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