PEP 812: Imaginary type and IEC 60559-compatible complex arithmetic by skirpichev · Pull Request #4681 · python/peps · GitHub
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PEP 812: Imaginary type and IEC 60559-compatible complex arithmetic - #4681

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PEP 812: Imaginary type and IEC 60559-compatible complex arithmetic#4681
skirpichev wants to merge 41 commits into
python:mainfrom
skirpichev:imaginary

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@skirpichev

@skirpichev skirpichev commented Oct 31, 2025 •
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Basic requirements (all PEP Types)

  • Read and followed PEP 1 & PEP 12
  • File created from the latest PEP template
  • PEP has next available number, & set in filename (pep-NNNN.rst), PR title (PEP 123: <Title of PEP>) and PEP header
  • Title clearly, accurately and concisely describes the content in 79 characters or less
  • Core dev/PEP editor listed as Author or Sponsor, and formally confirmed their approval
  • Author, Status (Draft), Type and Created headers filled out correctly
  • PEP-Delegate, Topic, Requires and Replaces headers completed if appropriate
  • Required sections included
    • Abstract (first section)
    • Copyright (last section; exact wording from template required)
  • Code is well-formatted (PEP 7/PEP 8) and is in code blocks, with the right lexer names if non-Python
  • PEP builds with no warnings, pre-commit checks pass and content displays as intended in the rendered HTML
  • Authors/sponsor added to .github/CODEOWNERS for the PEP

Standards Track requirements

  • PEP topic discussed in a suitable venue with general agreement that a PEP is appropriate
  • Suggested sections included (unless not applicable)
    • Motivation
    • Rationale
    • Specification
    • Backwards Compatibility
    • Security Implications
    • How to Teach This
    • Reference Implementation
    • Rejected Ideas
    • Open Issues
  • Python-Version set to valid (pre-beta) future Python version, if relevant
  • Any project stated in the PEP as supporting/endorsing/benefiting from the PEP formally confirmed such
  • Right before or after initial merging, PEP discussion thread created and linked to in Discussions-To and Post-History

📚 Documentation preview 📚: https://pep-previews--4681.org.readthedocs.build/

https://pep-previews--4681.org.readthedocs.build/pep-0812/

@hugovk hugovk changed the title PEP 812: Imaginary type and IEC 60559-compatible complex arithmetic PEP 9999: Imaginary type and IEC 60559-compatible complex arithmetic Oct 31, 2025
@skirpichev

ghost commented Oct 31, 2025 •
edited by skirpichev
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@skirpichev skirpichev added the new-pep A new draft PEP submitted for initial review label Oct 31, 2025
@hugovk

ghost commented Oct 31, 2025

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Please review PEP 1.

The general order of things:

  1. Open a discussion to see if there is consensus for this idea. This is also to save you time in case the idea is rejected.
  2. During the discussion, find a sponsor.
  3. Work with your sponsor, and when they think the PEP is ready for submission, then open the PR.
  4. A PEP number is assigned by a PEP editor after the sponsor has confirmed their sponsorship.

Therefore please don't write and submit a PEP with just a hope someone will sponsor. This should be arranged beforehand.

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@skirpichev skirpichev closed this Oct 31, 2025
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skirpichev deleted the imaginary branch October 31, 2025 06:51
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skirpichev restored the imaginary branch October 31, 2025 06:58
@skirpichev skirpichev reopened this Oct 31, 2025
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@skirpichev
skirpichev marked this pull request as ready for review November 1, 2025 03:00
@skirpichev
skirpichev requested a review from a team as a code owner November 1, 2025 03:00
@hugovk

ghost commented Nov 1, 2025

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@hugovk, may I reserve some number and set CODEOWNERS?

Yes, you may use 812. Thanks!

@hugovk hugovk changed the title PEP 9999: Imaginary type and IEC 60559-compatible complex arithmetic PEP 812: Imaginary type and IEC 60559-compatible complex arithmetic Nov 1, 2025
hugovk
hugovk reviewed Nov 5, 2025
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hugovk
hugovk reviewed Nov 5, 2025
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Mostly grammar nits.

@skirpichev

ghost commented Jan 27, 2026

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@serhiy-storchaka, have you changed your mind on support of this PEP?

If not, what's left here to do?

@skirpichev

ghost commented Mar 1, 2026

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OK, I'm closing this. I guess, @serhiy-storchaka not willing to support this proposal anymore.

@hugovk, thanks for review.

@skirpichev skirpichev closed this Mar 1, 2026
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skirpichev deleted the imaginary branch March 1, 2026 02:31
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skirpichev restored the imaginary branch March 2, 2026 00:37
This was referenced Mar 9, 2026
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@skirpichev skirpichev reopened this Aug 30, 2026
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ghost commented Aug 30, 2026

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Documentation build overview

📚 pep-previews | 🛠️ Build #34297266 | 📁 Comparing d0ccd48 against latest (fa5792c)

  🔍 Preview build  

4 files changed
+ pep-0812/index.html
± index.html
± numerical/index.html
± pep-0000/index.html

@skirpichev

ghost commented Aug 30, 2026

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@hugovk hugovk Awaiting requested review from hugovk
@serhiy-storchaka serhiy-storchaka Awaiting requested review from serhiy-storchaka

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@skirpichev @hugovk