Pyenv – enabling python3.7 command

Question

I've just got a backend repository to launch locally. It uses poetry for the dependencies and has this specified python = ">=3.7,<3.8".

python -V -> Python 2.7.16
python3 -V -> Python 3.8.5
which python -> /usr/local/bin/python
which python3 -> /usr/local/bin/python3

I've installed pyenv using brew and installed 3.7.8 (which is now visible when running pyenv versions).

Running poetry shell throws me:

The currently activated Python version 3.8.5 is not supported by the project (>=3.7,<3.8).

And when trying to poetry env use 3.7.8 it returns:

/bin/sh: python3.7: command not found

My question is – how can I setup python3.7 command on my macOS?

tzaman · Accepted Answer · 2020-09-22 14:03:33Z

4

It looks like there's no python3.7 executable linked explicitly by pyenv on your path.

You should enable 3.7.8 as the local version for your project by running: pyenv local 3.7.8 inside the project directory.

You could also tell poetry to use it directly by passing poetry env use the full executable path (not just the version string).

answered Sep 22, 2020 at 14:03

tzaman

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2 Comments

mdmb Over a year ago

I've run pyenv local 3.7.8 in the repo directory (it created .python-version file) – didn't help :(

mdmb Over a year ago

I've tried adding eval "$(pyenv init -)" to my ~/.bash_profile but I forgot about using ~/.zshrc. Adding the line there made the command (python3.7) work!

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