converting Python2 to Python3 (was: sparse dictionary)

[Mike Kupfer <mkupfer@alum.berkeley.edu>]

The Wanderer wrote:

> In my case, I started with the last Debian package version before the
> removal, imported the source package into git, dropped the debian/
> directory because that doesn't belong in the upstream codebase, ran the
> '2to3' tool (from the package of the same name) against the codebase,
> committed the result, and started doing "build" / run tests of the
> updated code (including comparisons back and forth with the untouched
> Python 2 version of the codebase).

FWIW, here are my notes from converting a couple small private scripts:

  * Note that 2to3 does not change the shebang line. And the actual
    command in Debian10 [and 11] is 2to3-2.7.

  * Run pylint before running 2to3, and address non-cosmetic issues. Then
    run pylint3 after the conversion.

mike