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[python-committers] Python 4.0 or Python 3.10?

Yury Selivanov yselivanov.ml at gmail.com
Tue Sep 25 16:42:10 EDT 2018 
On Tue, Sep 25, 2018 at 4:38 PM Serhiy Storchaka <storchaka at gmail.com> wrote:
[..]
> And changing the major version number itself is significant breaking
> change. From the name of the executable (python3 vs python4) hardcoded
> in Python and shell scripts to a number of third-party scripts that
> contain in the best case:
>
>      PY3 = sys.version_info[0] == 3
>      if not PY3:
>          ... # implies Python 2
>
> and in the worst case:
>
>      PY3 = sys.version[0] == '3'
>
> Changing the minor version number from a single-digit to a two-digits
> will break some software too, but I think that this breakage is smaller.

I think this is the last nail in the coffin of the "Python 4.0 after 3.9" idea.

Seems that we've reached the consensus: we release Python 3.10 after
Python 3.9.  We maybe release Python 4.0 at some point if there's a
significant backwards incompatible change.

Yury
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