'Having trouble switching python versions using pyenv global command

I have installed pyenv on Mac using homebrew and downloaded the version of Python 3.7.9. Everything works except when I use pyenv global 3.7.9, python3 -V still gives me version 3.9.7. How do I fix this?

pythonmacospathhomebrewpyenv


Solution 1:[1]

Run the commands below in your terminal before running pyenv install <VERSION> / pyenv global <VERSION> / python --version

eval "$(command pyenv init -)"
eval "$(command pyenv init --path)"

You may need to re-install your required python version

To avoid running these commands in every session, add the commands to your shell profile file ~/.zshrc or ~/.bashrc

Entire .zshrc that works as of March 2022:

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
export PIPENV_PYTHON="$PYENV_ROOT/shims/python"

plugin=(
  pyenv
)

eval "$(pyenv init -)"
eval "$(command pyenv init --path)"
eval "$(pyenv virtualenv-init -)"

Solution 2:[2]

you could do so by searching the process bin path (which python3 will give you the path of your python3.9.7, which python3.7 will give you the path of your python3.7) and by adding an alias into your ~/.bashrc (assuming you're using in from your terminal) you should be fine

Solution 3:[3]

For Arch Linux, these worked, as similarly answered by @Eladio:

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
export PIPENV_PYTHON="$PYENV_ROOT/shims/python"
pyenv init -
command pyenv init --path

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Yulia V
Solution 2 SCcagg5
Solution 3 kaiya

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