[Python-ideas] Code version evolver

[francismb]

On 3/15/19 4:54 AM, Stephen J. Turnbull wrote:
> What 2to3 does is to handle a lot of automatic conversions, such as
> flipping the identifiers from str to bytes and unicode to str.  It was
> necessary to have some such tool because of the very large amount of
> such menial work needed to change a 2 code base to a 3 code base.  But
> even so, there were things that 2to3 couldn't do, and it often exposed
> bugs or very poor practice (decode applied to unicode objects, encode
> applied to bytes) that had to be reworked by the developer anyway.
Very interesting from the 2/3 transition experience point of view. But
that's not still the past, IMHO that will be after 2020,... around 2025 :-)

Could one also say that under the line that it *improved* the code? (by
exposing bugs, bad practices) could be a first step to just *flag* those
behaviors/changes ?

Regards,
--francis