ImportError: cannot import name 'SourceDistribution' from 'pip._internal.distributions.source'

Question

pip3 install is not working and also pip3 is not being able to downgrade to pip19 from pip20.0:

Rayaans-MacBook-Pro:~ rayaangrewal$ pip3 install         


        

Answer 1

Install a new version of pip fixes it:

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