Some scripts do not work properly without pip being installed in Maya. I have experienced issues where Meta Humans and MGear won't launch without it. Therefore, I took some time to research and created a few steps to get it to work, which is applicable only for Windows users.
- Go to the website, https://pypi.org/project/pymel/#files, and download the most recent file.
- When you click on the link, it will ask you where you would like to save the file. I recommend saving it in C:\Users\[USER]\Documents\maya, where [USER] should be replaced with your username.
- Once you have the file saved, right-click on the Windows icon and choose 'Run'. In the 'Open:' field, write CMD and click 'OK' to run the Command Prompt.
- After C:\Users\User>, write cd C:\Users\[USER]\Documents\maya and press ENTER on your keyboard. This will navigate the command prompt to the folder where you have saved your installation file. You should see C:\Users\[USER]\Documents\maya> appear in your CMD window.
- After the arrow, write pip install pymel-1.4.0-py2.py3-none-any.whl and press Enter to execute the installation. This should start the installation process, which takes about 10 seconds. You will be notified once it is completed.