ModuleNotFoundError: No module named 'pip._internal'

Maintainer note: Anyone that still gets this issue please see #5599.

---

• Pip version: 10.0.1
• Python version: 3.6.5-2
• Operating system: 4.16.3-1-ARCH

Description:

sudo pip install --upgrade pip using 9.0.1-3.

$ pip3 -V          
Traceback (most recent call last):
  File "/usr/bin/pip3", line 7, in <module>
    from pip._internal import main
ModuleNotFoundError: No module named 'pip._internal'

What (other) I’ve run:

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3 get-pip.py --force-reinstall

# Back to 9.0.1-3
pacman -Sy --force python-pip
pip uninstall pip
python3 get-pip.py

[duhaime]

I hit the same snag and just reinstalled pip:

sudo easy_install pip

[yurmchg]

This worked for me: python3 -m pip install --user --upgrade pip