Hello, and thanks for your contribution!

I'm a bot set up to make sure that the project can legally accept your contribution by verifying you have signed the PSF contributor agreement (CLA).

Unfortunately we couldn't find an account corresponding to your GitHub username on bugs.python.org (b.p.o) to verify you have signed the CLA (this might be simply due to a missing "GitHub Name" entry in your b.p.o account settings). This is necessary for legal reasons before we can look at your contribution. Please follow the steps outlined in the CPython devguide to rectify this issue.

Thanks again to your contribution and we look forward to looking at it!

CLA signed.

IMHO this doesn't seem a bug (as is already suggested in the issue). Notice that any object (not only None) that doesn't implement _version will raise AttributeError. Checking for None only will be very confusing because it will return False but other things will not.

Please elaborate the PR title.

Since the issue has been closed, and determined as not a bug, I'm closing this PR.
Thanks!