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GeezerVison is showing github.com — PyUnicode_FromFormat(): add %X format · Issue #95849 · python/cpython

PyUnicode_FromFormat(): add %X format #95849

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PyUnicode_FromFormat(): add %X format#95849
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interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)type-featureA feature request or enhancementA feature request or enhancement

Description

@philg314
philg314
opened on Aug 10, 2022
Issue body actions

Feature or enhancement

Add %X (uppercase hex) format to PyUnicode_FromFormat().

Pitch

%X's omission is not intentional, it was just not needed so far. There are many cases where it would be useful, for example the canonical representation of Unicode code points (f"U+{code:0>4X}").

Previous discussion

https://discuss.python.org/t/pyunicode-fromformat-add-x

Reacted by Petr Viktorin

Activity

  1. philg314
    added
    type-featureA feature request or enhancementA feature request or enhancement
    on Aug 10, 2022

  2. serhiy-storchaka commented on Oct 29, 2022

    @serhiy-storchaka
    serhiy-storchaka
    on Oct 29, 2022
    Member
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    See also more generic #98836.

  3. iritkatriel
    added
    interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)
    on Nov 28, 2023

  4. StanFromIreland commented on Aug 17, 2025

    @StanFromIreland
    StanFromIreland
    on Aug 17, 2025
    Member
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    This has been added, and can be found in the documentation (the table is not ordered alphabetically for some reason, its near the start).

  5. StanFromIreland
    closed this as a duplicateof Extend PyUnicode_FromFormat() #98836 on Aug 17, 2025
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