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bpo-40287: Fix SpooledTemporaryFile.seek() return value #19540

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merged 4 commits into from Apr 17, 2020
Merged

bpo-40287: Fix SpooledTemporaryFile.seek() return value #19540

merged 4 commits into from Apr 17, 2020

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methane
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@methane methane commented Apr 15, 2020 •
edited by bedevere-bot

corona10
corona10 reviewed Apr 15, 2020
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@corona10 corona10 left a comment

  • Are you going to submit a backported patch for 3.8/3.7 as the bug?
  • if not, don't we have to add to the documentation as Changed in version 3.9:?

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methane commented Apr 16, 2020

  • Are you going to submit a backported patch for 3.8/3.7 as the bug?

Yes. I think this is a bug and safe enough to backport.

@methane methane added needs backport to 3.7 needs backport to 3.8 type-bug An unexpected behavior, bug, or error labels Apr 16, 2020
aeros
aeros approved these changes Apr 16, 2020
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Thanks for the PR @methane. The changes LGTM; I just have a minor suggestion regarding the Misc/NEWS entry.

Misc/NEWS.d/next/Library/2020-04-15-17-21-48.bpo-40287.-mkEJH.rst Outdated
@@ -0,0 +1 @@
Fixed ``SpooledTemporaryFile.seek()`` did not return the position.
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Suggested change
Fixed ``SpooledTemporaryFile.seek()`` did not return the position.
Fixed ``SpooledTemporaryFile.seek()`` to return the position instead of
``None``.

Grammar fix and slight elaboration on the change made.

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slight elaboration on the change made.

While return (including implicit return) and return None has the same behavior,
"return None intentionally" is different from "return nothing (but None actually)" for human.

In this case, returned None didn't have any meaning. So I don't want to mention about None.

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Hmm, good point. I suppose my thoughts were that if I were to read this news entry, I might ask "what did it do previously?". But in this case, the change was probably straightforward enough that they could simply look at the source.

corona10
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LGTM

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corona10 commented Apr 16, 2020

@methane
By the way, Can we add the unit test for the future regression?
https://github.com/python/cpython/blob/master/Lib/test/test_tempfile.py

@corona10 corona10 dismissed their stale review Apr 16, 2020

Unittest

corona10
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@methane lgtm :)

@methane methane merged commit 485e715 into python:master Apr 17, 2020
@methane methane deleted the bpo40287 branch Apr 17, 2020
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miss-islington commented Apr 17, 2020

Thanks @methane for the PR 🌮🎉.. I'm working now to backport this PR to: 3.7, 3.8.
🐍🍒⛏🤖 I'm not a witch! I'm not a witch!

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Apr 17, 2020
@methane @miss-islington
bpo-40287: Fix SpooledTemporaryFile.seek() return value (pythonGH-19540)
c89009b 
It has not returned the file position after the seek.
(cherry picked from commit 485e715)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
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bedevere-bot commented Apr 17, 2020

GH-19566 is a backport of this pull request to the 3.8 branch.

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bedevere-bot commented Apr 17, 2020

GH-19567 is a backport of this pull request to the 3.7 branch.

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Apr 17, 2020
@methane @miss-islington
bpo-40287: Fix SpooledTemporaryFile.seek() return value (pythonGH-19540)
fadb3fa 
It has not returned the file position after the seek.
(cherry picked from commit 485e715)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
miss-islington added a commit that referenced this pull request Apr 17, 2020
@miss-islington @methane
bpo-40287: Fix SpooledTemporaryFile.seek() return value (GH-19540)
11ae7d0 
It has not returned the file position after the seek.
(cherry picked from commit 485e715)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
miss-islington added a commit that referenced this pull request Apr 17, 2020
@miss-islington @methane
bpo-40287: Fix SpooledTemporaryFile.seek() return value (GH-19540)
9796fe8 
It has not returned the file position after the seek.
(cherry picked from commit 485e715)

Co-authored-by: Inada Naoki <songofacandy@gmail.com>
CuriousLearner added a commit to CuriousLearner/cpython that referenced this pull request May 29, 2020
@CuriousLearner
Merge branch 'master' into bpo-26543
e4d193d 
* master: (1985 commits)
  bpo-40179: Fix translation of #elif in Argument Clinic (pythonGH-19364)
  bpo-35967: Skip test with `uname -p` on Android (pythonGH-19577)
  bpo-40257: Improve help for the typing module (pythonGH-19546)
  Fix two typos in multiprocessing (pythonGH-19571)
  bpo-40286: Use random.randbytes() in tests (pythonGH-19575)
  bpo-40286: Makes simpler the relation between randbytes() and getrandbits() (pythonGH-19574)
  bpo-39894: Route calls from pathlib.Path.samefile() to os.stat() via the path accessor (pythonGH-18836)
  bpo-39897: Remove needless `Path(self.parent)` call, which makes `is_mount()` misbehave in `Path` subclasses. (pythonGH-18839)
  bpo-40282: Allow random.getrandbits(0) (pythonGH-19539)
  bpo-40302: UTF-32 encoder SWAB4() macro use a|b rather than a+b (pythonGH-19572)
  bpo-40302: Replace PY_INT64_T with int64_t (pythonGH-19573)
  bpo-40286: Add randbytes() method to random.Random (pythonGH-19527)
  bpo-39901: Move `pathlib.Path.owner()` and `group()` implementations into the path accessor. (pythonGH-18844)
  bpo-40300: Allow empty logging.Formatter.default_msec_format. (pythonGH-19551)
  bpo-40302: Add pycore_byteswap.h header file (pythonGH-19552)
  bpo-40287: Fix SpooledTemporaryFile.seek() return value (pythonGH-19540)
  Minor modernization and readability improvement to the tokenizer example (pythonGH-19558)
  bpo-40294: Fix _asyncio when module is loaded/unloaded multiple times (pythonGH-19542)
  Fix parameter names in assertIn() docs (pythonGH-18829)
  bpo-39793: use the same domain on make_msgid tests (python#18698)
  ...
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