"pyenv versions" and "python -V" showing different versions

Question

I need to use python 3.8. I installed it using the following command:

pyenv install 3.8.1

Now the output of pyenv versions is:

  system
* 3.8.1 (set by /Users/username/.pyenv/version)

Output of python -V:

Python 2.7.16

Why are they different?

Answer 1

Try eval "$(pyenv init --path)". That worked for me.

Answer 2

I had the exact same issue after installing oh-my-zsh. What solved it for me was:

1. Add pyenv to the plugins list on .zshrc:

   plugins=(git pyenv)
   

2. Almost at the top of the file, just under these lines:

   # Path to your oh-my-zsh installation.
   export ZSH="$HOME/.oh-my-zsh"
   

   I added these lines:

   export PYENV_ROOT="$HOME/.pyenv"
   export PATH="$PYENV_ROOT/bin:$PATH"
   eval "$(pyenv init --path)"
   

And then I relaunched the terminal and everything was fine! (that is, the python version was the same)