bpo-42914: pprint.pprint function displays integer with underscores#24864
bpo-42914: pprint.pprint function displays integer with underscores#24864gpshead merged 12 commits intopython:masterfrom
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| if issubclass(typ, int) and r is int.__repr__: | ||
| if self._underscore_numbers: | ||
| return builtins.format(object, "_d"), True, False |
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why not use f"{object:_d}" instead of format? That'll be less bytecode and thus faster.
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It uses builtins.format() according ericvsmith's review (#24864 (comment)): the builtins.format() function was considered lightly better than f-string format.
Format documentation shows '%-format' is not the preferred way of formating. builtins.format() and f-string format use the same Format Specification Mini-Language but there is not an official preference between them (or I did not find it in the documentation). Do you know if there is an official opinion about it? Should I ask on python-dev mailing list?
I'm ready to change to f-string format but I'm afraid another commiter has another opinion about this point and ask to revert it again.
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f-strings would be best. I was commenting on the built-in format() vs str.format().
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Thank you for the explanation. :)
I committed a change to use f-string format.
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A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated. Once you have made the requested changes, please leave a comment on this pull request containing the phrase |
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I changed the default behavior to keep backward compatibility (requested by https://bugs.python.org/msg389205). |
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I have made the requested changes; please review again |
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Thanks for making the requested changes! @gpshead: please review the changes made to this pull request. |
BPO-42914 was not added to the What's New in pythonGH-24864. This includes it in the "Improved Modules" section. Automerge-Triggered-By: GH:gpshead (cherry picked from commit 4846ea9) Co-authored-by: Wm. Keith van der Meulen <keith@wkeithvan.com>
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This PR implements the separation for big integers by
_character for better readability forpprint.pprint()andpprint.pformat(). So 123456 is displayed as '1_234_56'.A new parameter (
underscore_numbers) is added so this new behavior can be disabled.https://bugs.python.org/issue42914