I have followed the instructions at <https://opensource.com/article/19/5/python-3-default-mac>:
Now, `python -V` shows `3.8.1`, but `pip -V` still shows `19.2.3`.

I checked with `which pip3`, which shows 
`/Library/Frameworks/Python.framework/Versions/3.8/bin/pip3`, but using

`echo "alias pip=/Library/Frameworks/Python.framework/Versions/3.8/bin/pip3>> ~/.zshrc` does not seem to work.

`pip -V` gives: `pip 19.2.3 from /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pip (python 3.8)`.

I have MacOS Cataline 10.15.3. Can someone help please?