Python 3.10 not recognized

[adamjstewart]

Describe the bug
All of the documentation for setup-python suggests that Python versions can be listed without quotes:

python-version: [2.7, 3.6, 3.7, 3.8, pypy2, pypy3]

However, this doesn't seem to work for 3.10. The action errors out, with the following error msg:

Version 3.1 with arch x64 not found

If I wrap 3.10 in quotes, it says 3.10 is not found, which is a little better, although I would like to be able to use the alpha version if possible.

Which version of the action are you using?

• v1
• v2
• Some other tag (such as v2.0.1 or master)

Environment

• self-hosted
• Linux
• Windows
• Mac

Python Versions
3.10

To Reproduce
Steps to reproduce the behavior:

1. Try adding 3.10 to the list of python-version without quotes

Run/Repo Url

https://github.com/adamjstewart/fiscalyear/actions/runs/346374366
https://github.com/adamjstewart/fiscalyear/actions/runs/346388888

[maxim-lobanov]

@adamjstewart , Python 3.10 alpha is already available. But when you write 3.10, you are requesting 3.10 stable based on semver notation. Please follow example in readme file to setup 3.10-alpha: https://github.com/actions/setup-python

[adamjstewart]

Ah, I was hoping 3.10 would mean any 3.10, even alpha/beta/rc. I think the following error msg is still a bug though:

Version 3.1 with arch x64 not found

It should say 3.10, not 3.1.

[maxim-lobanov]

Please pay attention that task input follow semver notation.

As for the confusing error message, it is a feature of YAML parsing. When you specify input like

version: 3.10

3.10 is parsed as a number and it is trimmed to 3.1 that looks like expected behavior for numbers.
You should specify input with quotes to treat it as string.

version: '3.10'

The first and the second examples in README file shows the correct way with quotes.
But looks like the third and fourth examples show incorrect way. cc: @konradpabjan