Which python am I using?

First I modified my $PATH: sudo nano /etc/paths so that /Library/Frameworks/Python.framework/Versions/3.6/bin was not being invoked. I made sure my paths were in the right order so that python looked for /usr/local/bin/python3 and /usr/local/bin/python2 first to force the issue.

However, $ python3 --version still returned Python 3.6.0, though brew says python3 3.6.2 already installed.

brew doctor to the rescue: homebrew recommended a couple things. python was incorrectly symlinked so I ran brew --overwrite python3. Finally, it diagnosed python coming from /Library/Frameworks/Python.framework/Versions/3.6/bin, so I sudo rm -rf /Library/Frameworks/Python.framework. Now python versions are correct.

Homebrew brew doctor warning about /Library/Frameworks/Python.framework, even with brew’s Python installed

Thank you everyone for your help.

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