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I have python 3.6 and python 3.7 installed on my Mac. When I type python3 --version in terminal, output is "Python 3.6.0" . Maybe it would be better just to uninstall python 3.6? Then how do I do that properly? I spent quite some time googling this and results are mostly about changing default system python from 2.7 to 3 which is not what I want.

mk_hat
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    Possible duplicate of [How to set Python's default version to 3.x on OS X?](https://stackoverflow.com/questions/18425379/how-to-set-pythons-default-version-to-3-x-on-os-x) – sa_n__u Oct 10 '19 at 07:37

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sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.7 1

sudo update-alternatives --config python

sudo update-alternatives --set python /usr/bin/python3.7
Aref mousakhani
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  • command not found. Could it be because of new shell on Mac - zsh? Edit: Seems like update-alternatives doesn't work on OS X. – mk_hat Oct 10 '19 at 08:50
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You could install a Python version management tool like pyenv. Then you could install your version of choice and set it as global default with 

pyenv versions  # List versions available to pyenv
pyenv global <version>  # Set global default version
Syntaxén
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