[Docutils-develop] [docutils:bugs] Re: #441 Move from "optparse" to "argparse".

[Günter M. <mi...@us...>]

I am sorry for the delay and the additional work. The change turned out to be far more complicated than expected when I first proposed it.
In order to have informed choices, I had to study the current state in detail first. (See [r8996] for a by-product.)
I propose to start with clean up and deprecation steps to smoothe the actual OptionParser -> ArgumentParser change. (A proposal for the two first steps is attached.)



Attachments:

- [0001-Small-fixes-mostly-documentation-Test-more-list-settings.patch](https://sourceforge.net/p/docutils/bugs/_discuss/thread/c76f9a2618/45c6/9106/2d9c/5575/attachment/0001-Small-fixes-mostly-documentation-Test-more-list-settings.patch) (8.2 kB; text/x-patch)
- [0002-Clean-up-docutilsfrontend-before-the-switch-to-arparse.patch](https://sourceforge.net/p/docutils/bugs/_discuss/thread/c76f9a2618/45c6/9106/2d9c/5575/attachment/0002-Clean-up-docutilsfrontend-before-the-switch-to-arparse.patch) (10.5 kB; text/x-patch)


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** [bugs:#441] Move from "optparse" to "argparse".**

**Status:** open
**Created:** Thu Jan 06, 2022 03:02 PM UTC by Günter Milde
**Last Updated:** Thu Feb 03, 2022 02:45 PM UTC
**Owner:** Günter Milde


The optparse documentation says:
> Deprecated since version 3.2: The optparse module is deprecated and will not be developed further; development will continue with the argparse module.

We are currently suppressing related deprecation warnings in the test suite.
After raising the Python dependency to >=3.7, now may be the right time to make the move.


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