New submission from Serhiy Storchaka <>:

All changes to the magic number in Lib/importlib/ are 
attributed with 3.7a0. But they were made at different stages.

There is also inconsistency in specifying Python version for older changes. 
Some authors specify the first Python version after bumping the magic number 
(i.e. the version that was released with this magic number). Others specify the 
Python version after which the bumping was made. I think the former is correct.

The proposed PR fixes Python versions and adds issue numbers if known. I have 
tracked only changes in Python 3.x.

messages: 312115
nosy: benjamin.peterson, pitrou, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Fix Python versions in the table of magic numbers
versions: Python 3.7, Python 3.8

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