Need help with using python 3.7 instead of 3.8

clankill3r · December 21, 2020, 1:32pm

I try to follow this:

Unity-Technologies/ml-agents/blob/release_10_docs/docs/Using-Virtual-Environment.md

# Using Virtual Environment

## What is a Virtual Environment?

A Virtual Environment is a self contained directory tree that contains a Python
installation for a particular version of Python, plus a number of additional
packages. To learn more about Virtual Environments see
[here](https://docs.python.org/3/library/venv.html).

## Why should I use a Virtual Environment?

A Virtual Environment keeps all dependencies for the Python project separate
from dependencies of other projects. This has a few advantages:

1. It makes dependency management for the project easy.
1. It enables using and testing of different library versions by quickly
   spinning up a new environment and verifying the compatibility of the code
   with the different version.

## Python Version Requirement (Required)

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When I type python --version I get Python 3.8.5.

But the document clearly states:

This guide has been tested with Python 3.6 and 3.7. Python 3.8 is not supported at this time.

So I installed 3.7, which is located here:

C:\Users\clank\AppData\Local\Programs\Python\Python37

Now how can I follow this and the next steps onward: ml-agents/docs/Using-Virtual-Environment.md at release_10_docs · Unity-Technologies/ml-agents · GitHub

With python 3.7 instead of python 3.8.

celion_unity · December 21, 2020, 5:30pm

Sorry, that section of the documentation is out of date; python 3.8 is supported and tested. I’ll update that section in the docs, and also check whether we can run with 3.9.

celion_unity · December 21, 2020, 6:17pm

Turns out python 3.9 will need a little more work - there’s nothing in ml-agents code specifically that prevents 3.9, but some of the dependencies don’t work out of the box.

A PR to clean up that part of the docs is here: Clarify Python 3.8 support by chriselion · Pull Request #4784 · Unity-Technologies/ml-agents · GitHub

clankill3r · December 21, 2020, 9:43pm

Great it works with 3.8 now as well. I remember I tried setting up the ml-agent project with students when it was still using tensorflow 1.7 and it was such a pain to get it working on all the different laptops. So far it seems it goes a bit smoother now but I keep my fingers crossed.