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gh-82663: Clarify codecs.iterdecode/encode docs#136497

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gh-82663: Clarify codecs.iterdecode/encode docs#136497
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@StanFromIreland StanFromIreland commented Jul 10, 2025 •
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I do not think there is a need for an example as @doerwalter suggested, but I do not mind adding one.

📚 Documentation preview 📚: https://cpython-previews--136497.org.readthedocs.build/

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I'm not sure whether we should do this. The codecs machinery is not tied to str<->bytes only.

While it's true that the current implementation of those two functions will only work with iterators of certain types, this is an (unwanted) side-effect of their use of "" and b"" in the implementation. More correct would be to use input[:0] to finalize the encoder.

Perhaps it's better to write e.g. "For most encodings, iterator must yield :class:str objects."

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malemburg commented Jul 10, 2025

Ok, I had another look at what Walter had implemented for the incremental encoders/decoders and he does indeed assume that only str<->bytes encoding can be used.

@malemburg malemburg merged commit 4b41b20 into python:main Jul 10, 2025
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malemburg commented Jul 10, 2025

Thanks, @StanFromIreland

@malemburg malemburg added 3.13 bugs and security fixes 3.14 bugs and security fixes needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes and removed 3.13 bugs and security fixes 3.14 bugs and security fixes labels Jul 10, 2025
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Thanks @StanFromIreland for the PR, and @malemburg for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
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Thanks @StanFromIreland for the PR, and @malemburg for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 10, 2025
@StanFromIreland @miss-islington
pythongh-82663: Clarify codecs.iterdecode/encode docs (pythonGH-136497
8033736 
)

Closes pythonGH-82663
(cherry picked from commit 4b41b20)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jul 10, 2025
@StanFromIreland @miss-islington
pythongh-82663: Clarify codecs.iterdecode/encode docs (pythonGH-136497
131fe61 
)

Closes pythonGH-82663
(cherry picked from commit 4b41b20)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
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GH-136512 is a backport of this pull request to the 3.13 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.13 bugs and security fixes label Jul 10, 2025
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GH-136513 is a backport of this pull request to the 3.14 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.14 bugs and security fixes label Jul 10, 2025
@StanFromIreland StanFromIreland deleted the gh-82663 branch July 10, 2025 15:40
malemburg pushed a commit that referenced this pull request Jul 10, 2025
@miss-islington @StanFromIreland
[3.13] gh-82663: Clarify codecs.iterdecode/encode docs (GH-136497) (#…
81d1986 
…136512)

gh-82663: Clarify `codecs.iterdecode/encode` docs (GH-136497)

Closes GH-82663
(cherry picked from commit 4b41b20)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
malemburg pushed a commit that referenced this pull request Jul 10, 2025
@miss-islington @StanFromIreland
[3.14] gh-82663: Clarify codecs.iterdecode/encode docs (GH-136497) (#…
326fe0d 
…136513)

gh-82663: Clarify `codecs.iterdecode/encode` docs (GH-136497)

Closes GH-82663
(cherry picked from commit 4b41b20)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
AndPuQing pushed a commit to AndPuQing/cpython that referenced this pull request Jul 11, 2025
@StanFromIreland @AndPuQing
pythongh-82663: Clarify codecs.iterdecode/encode docs (python#136497)
d684224 
Closes python#82663
Pranjal095 pushed a commit to Pranjal095/cpython that referenced this pull request Jul 12, 2025
@StanFromIreland @Pranjal095
pythongh-82663: Clarify codecs.iterdecode/encode docs (python#136497)
298ed6f 
Closes python#82663
picnixz pushed a commit to picnixz/cpython that referenced this pull request Jul 13, 2025
@StanFromIreland @picnixz
pythongh-82663: Clarify codecs.iterdecode/encode docs (python#136497)
fb04245 
Closes python#82663
taegyunkim pushed a commit to taegyunkim/cpython that referenced this pull request Aug 4, 2025
@StanFromIreland @taegyunkim
pythongh-82663: Clarify codecs.iterdecode/encode docs (python#136497)
b544f83 
Closes python#82663
Agent-Hellboy pushed a commit to Agent-Hellboy/cpython that referenced this pull request Aug 19, 2025
@StanFromIreland @Agent-Hellboy
pythongh-82663: Clarify codecs.iterdecode/encode docs (python#136497)
1b9cb19 
Closes python#82663
kumaraditya303 pushed a commit to miss-islington/cpython that referenced this pull request Sep 9, 2025
@miss-islington @StanFromIreland @kumaraditya303
[3.14] pythongh-82663: Clarify codecs.iterdecode/encode docs (pytho…
4235bf5 
…nGH-136497) (python#136513)

pythongh-82663: Clarify `codecs.iterdecode/encode` docs (pythonGH-136497)

Closes pythonGH-82663
(cherry picked from commit 4b41b20)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
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