Description

mhsmith

opened on Feb 3, 2026

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Bug report

Bug description:

The Android testbed can't distinguish between stdout/stderr messages which were triggered by a newline, and those triggered by a manual call to flush. This doesn't affect Python's own test suite very much, but when the testbed is used by cibuildwheel, it makes a mess of some packages' test suites. For example, pytest's "one dot per test" progress indicator shows every dot on a separate line.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Other

Linked PRs

• gh-144415: Android testbed fixes #142912
• [3.14] gh-144415: Android testbed fixes (GH-142912) #144416
• [3.13] gh-144415: Android testbed fixes (GH-142912) #144417

Activity

1. mhsmith

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   OS-android

   on Feb 3, 2026
2. StanFromIreland

   added

   testsTests in the Lib/test dirTests in the Lib/test dir

   on Feb 3, 2026
3. freakboy3742

   added a commit that references this issue on Feb 3, 2026

   gh-144415: Android testbed fixes (#142912)

   cb1dc91
4. freakboy3742

   closed this as completedin #142912on Feb 3, 2026
5. miss-islington

   added 2 commits that reference this issue on Feb 3, 2026

   pythongh-144415: Android testbed fixes (pythonGH-142912)

   710c183

   pythongh-144415: Android testbed fixes (pythonGH-142912)

   df56fba
6. freakboy3742

   added 2 commits that reference this issue on Feb 3, 2026

   [3.14] gh-144415: Android testbed fixes (GH-142912) (#144416)

   b393713

   [3.13] gh-144415: Android testbed fixes (GH-142912) (#144417)

   ebc047f
7. Aniketsy

   added a commit that references this issue on Feb 3, 2026

   pythongh-144415: Android testbed fixes (python#142912)

   a01abdb
8. thunder-coding

   added a commit that references this issue on Feb 15, 2026

   pythongh-144415: Android testbed fixes (python#142912)

   810d1f0

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