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Enable UTF-8 mode by default (implement PEP 686) #133711
Description
Feature or enhancement
Proposal:
See PEP 686
Has this already been discussed elsewhere?
No response given
Links to previous discussion of this feature:
PEP 686, approved for Python 3.15.
Linked PRs
- GH-133711: Enable UTF-8 mode by default (PEP 686) #133712
- gh-133711: Fix test_regrtest for PYTHONUTF8=1 #134839
- gh-133711: Log Windows OEM code page in test.pythoninfo #134840
- gh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode #134841
- [3.14] gh-133711: Fix test_regrtest for PYTHONUTF8=1 (GH-134839) #134842
- [3.13] gh-133711: Fix test_regrtest for PYTHONUTF8=1 (GH-134839) #134843
- [3.14] gh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (GH-134841) #134851
- [3.13] gh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (GH-134841) #134852
Activity
serhiy-storchaka commentedon May 11, 2025
Please wait until we fix all errors in the tests and the stdlib when running in a non-UTF-8 locale (see #133677). Then ensure that all tests are still passed in a non-UTF-8 locale after this change.
pythongh-133711: Fix test_regrtest for PYTHONUTF8=1
pythongh-133711: Log Windows OEM code page in test.pythoninfo
pythongh-133711: Log Windows OEM code page in test.pythoninfo
pythongh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode
gh-133711: Fix test_regrtest for PYTHONUTF8=1 (#134839)
pythongh-133711: Fix test_regrtest for PYTHONUTF8=1 (pythonGH-134839)
pythongh-133711: Fix test_regrtest for PYTHONUTF8=1 (pythonGH-134839)
gh-133711: Log Windows OEM code page in test.pythoninfo (#134840)
gh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (#134841)
pythongh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (py…
pythongh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (py…
[3.13] gh-133711: Fix test_regrtest for PYTHONUTF8=1 (GH-134839) (#13…
5 remaining items
pythongh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (py…
GH-133711: Enable UTF-8 mode by default (PEP 686) (#133712)
pythongh-133711: Fix test_regrtest for PYTHONUTF8=1 (python#134839)
pythongh-133711: Log Windows OEM code page in test.pythoninfo (python…
pythongh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (py…
pythonGH-133711: Enable UTF-8 mode by default (PEP 686) (python#133712)
pythonGH-133711: Enable UTF-8 mode by default (PEP 686) (python#133712)
StanFromIreland commentedon Sep 17, 2025
Is there anything left to do here?
hugovk commentedon Jan 15, 2026
Update the PEP from Accepted to Finished?
https://peps.python.org/pep-0686/
vstinner commentedon Jan 16, 2026
I wrote python/peps#4785 to set PEP 686 Status to Final.
pythongh-133711: Fix test_regrtest for PYTHONUTF8=1 (python#134839)
pythongh-133711: Log Windows OEM code page in test.pythoninfo (python…
pythongh-133711: Fix test_readline.test_nonascii() for UTF-8 Mode (py…