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Implement PEP 786: Precision and modulo-precision flag format specifiers for integer fields #146436
Closed as not planned
Description
Feature or enhancement
Proposal:
Issue for PR to implement PEP 786 so I can link to this issue in blurb in the PR.
Has this already been discussed elsewhere?
Forum discussions:
- Pre-PEP discussion: https://discuss.python.org/t/implement-precision-format-spec-for-int-type-data/80760
- PEP discussion: https://discuss.python.org/t/pep-786-precision-and-modulo-precision-flag-format-specifiers-for-integer-fields/106907
Implementation discussions:
- Old implementation discussion, discarded. gh-74756: support precision field for integer formatting types #131926
- Some talk of modulo-precision: Add integer formatting code for fixed-width signed arithmetic (2's complement) #74756
Actual implementation:
- Reference implementation Issue: Implement PEP 786: Precision and modulo-precision flag format specifiers for integer fields #146436
- Reference implementation PR: gh-146436: Implementation of PEP 786 #146437
PEPs repo:
- Merged PR: PEP 786: Precision and Modulo-Precision Flag format specifiers for integer fields peps#4416
- Old PR with wrong branch name / PEP number, closed in favor of merged one: [Old] PEP 786: Precision and Modulo-Precision Flag format specifiers for integer fields peps#4365
Activity
jb2170 commentedon Mar 25, 2026
Addressed by https://github.com/jb2170/cpython/tree/pep-786
I'll rebase soon.
[-]Implement precision and modulo-precision in string formatting for integer fields[/-][+]Implement PEP 786: Precision and modulo-precision flag format specifiers for integer fields[/+]picnixz commentedon Mar 25, 2026
As I mentioned on the PR:
skirpichev commentedon Mar 25, 2026
I think, that pr might be kept, as a draft. It's already opened.
But lets close this issue. The PEP wasn't even discussed. We can reopen, if it will be accepted.
gvanrossum commentedon Mar 26, 2026
@jb2170 A link to the Discourse thread would be appreciated.
jb2170 commentedon Mar 26, 2026
I've updated the OP to include the discussion thread 😄
Edit 2026/04/09: Added the new PEP discussion thread too