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pythonpython-3.xvirtualenvpyenv

Set two different python versions with pyenv with different names?

Is it possible to set two different python versions for different names using pyenv? E.g. I want the python3 refer to version 3.7.4 but python refer to version 2 of python defined by system which is 2.7.12 so there will not be any conflicts and issues.

Currently I just can set version globally using pyenv global 3.7.4 which cause both python and python3 be version 3.7.4.

Solution

  • Pyenv allows you to use different versions of Python at once using "advanced" mode

    Example from documentation:

    $ pyenv local 2.7.6 3.3.3
$ pyenv versions
  system
* 2.7.6 (set by /Users/yyuu/path/to/project/.python-version)
* 3.3.3 (set by /Users/yyuu/path/to/project/.python-version)
$ python --version
Python 2.7.6
$ python2.7 --version
Python 2.7.6
$ python3.3 --version
Python 3.3.3

    For more information, please look at: https://github.com/pyenv/pyenv/blob/master/COMMANDS.md#pyenv-local-advanced