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?
3 Answers
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 "$(pyenv virtualenv-init -)"
1 Comment
kaiya
why do you use
eval?For Arch Linux, these worked, as similarly answered by @Eladio:
export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
export PIPENV_PYTHON="$PYENV_ROOT/shims/python"
pyenv init -
command pyenv init --path
Comments
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
1 Comment
kaiya
The whole point about using pyenv is that you can use multiple versions of python automatically, so you are stripping off the auto-part of it, elsewise I am fine with that ;)
pyenv versionsand make sure that PyEnv knows about version3.7.9. I don't remember for sure, but I don't think that just installing a new Python version viabrewis enough. I think you have to run some PyEnv command to tell PyEnv that the new version exists. I don't remember just what the syntax is for that. I think PyEnv can install new Python versions itself as well.