1. Error reporting when using PIP:

1 Traceback (most recent call last):
2   File "/usr/local/bin/pip", line 7, in <module>
3     from pip._internal import main
4 ImportError: No module named _internal

2. Solution:

Update pip

python3 -m pip install --upgrade pip

pip install --upgrade pip

3. Completion

After all updates are installed successfully, PIP – V can run normally and use pip.