What to do if pyenv is not enabled (zsh)

Premise

Discovery that pyenv is not used

Confirm that it is specified in 3.8.6 in pyenv.

% pyenv versions
  system
* 3.8.6 (set by /Users/user/.pyenv/version)

However, when I actually checked the version of python, it was not 3.8.6! !!

% python3 -V
Python 3.9.0
% python -V
Python 2.7.16

If you check your PATH in the first place

% echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/user/.pyenv/bin

First comes / user / local / bin!

% which python
/usr/bin/python
% which python3
/usr/local/bin/python3

I see, pyenv is not used. ~ / .zshenv looks like this

% cat ~/.zshenv
export PYENV_ROOT=$HOME/.pyenv
export PATH=$PYENV_ROOT/bin:$PATH
if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init -)"
fi

There seems to be no problem in terms of content. When it comes to rewriting the order of PATH, is it around / etc / zprofile?

% cat /etc/zprofile
# System-wide profile for interactive zsh(1) login shells.

# Setup user specific overrides for this in ~/.zprofile. See zshbuiltins(1)
# and zshoptions(1) for more details.

if [ -x /usr/libexec/path_helper ]; then
	eval `/usr/libexec/path_helper -s`
fi

I doubt that it is necessary to rewrite such a place, so check the [official site] of pyenv (https://github.com/pyenv/pyenv#homebrew-on-macos). Then, to ~ / .zshrc

~/.zshrc


if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init -)"
fi

Immediately move the part described in ~ / .zshenv to ~ / .zshrc and restart the terminal!

Then

% echo $PATH
/Users/user/.pyenv/shims:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/user/.pyenv/bin
% python -V
Python 3.8.6
% which python
/Users/ham/.pyenv/shims/python

Conclusion

--In the case of zsh, not all environment variables should be described in ~ / .zshenv, and ~ / .zshrc is also used. --Check the official documentation.

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