A solution to the problem that the Python version in Conda cannot be changed

problem

Create an environment with Anaconda with python version 3.8.5. スクリーンショット 2020-12-17 9.19.13.png

However, when I run conda, the python version is 2.7.16.

(base) [email protected] ~ % conda activate renatoenv
(renatoenv) [email protected] ~ % python --version
Python 2.7.16

What you did

① Reinstall Anaconda ② Install pyenv

Since it did not change even if I did ①, I will omit it as an article. I will explain ②.

What is pyenv

It's a tool that makes it easy to switch between python versions. It is convenient for switching between 2 series and 3 series.

Install pyenv

First, let's install pyenv. If you bring it from git, you can use the above command, and if you can use brew, you can use the command below.

$ git clone git://github.com/yyuu/pyenv.git ~/.pyenv
$ brew install pyenv

Edit bash_profile Then edit bash_profile to get it through the path of pyenv.

$ echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile
$ echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile
$ echo 'eval "$(pyenv init -)"' >> ~/.bash_profile

Finally apply the save of bash_profile

$ source ~/.bash_profile

Then the Python version changed.

(base) [email protected] ~ % conda activate renatoenv
(renatoenv) [email protected] ~ % python --version
Python 3.8.5

References

This article was written with reference to the following information.

-Installing and using pyenv, what to do if you can't switch python versions

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