changing python path on mac?

PATH="/Library/Frameworks/Python.framework/Versions/3.1/bin:${PATH}" 
export PATH

This will append the Python directory to the path.

If this is part of ~/.bash_profile, this will append the Python path on each startup.

For those using a .zsh terminal instead of .bash, you might need to update your PATH using the command:

nano .zsh

Then update your PATH with the export command.

See the link below for more guide:
https://coolestguidesontheplanet.com/how-to-add-to-the-shell-path-in-macos-using-terminal/

try the below lines

cd /usr/local/bin
cp python3.7 python

Then restart terminal