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GeezerVison is showing github.com — gh-134160: "First extension module" tutorial improvements by encukou · Pull Request #144183 · python/cpython

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@encukou

@encukou encukou commented Jan 23, 2026 •
edited by github-actions Bot
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I've run through the tutorial with a mentee (best way to test tutorials btw!) and found some things to improve.

  • Pass -v to pip, so compiler output is visible
  • Move the call spam.system(3) up so that error handling is tested right after it's added
  • Use PyUnicode_AsUTF8AndSize as PyUnicode_AsUTF8 is not in the Limited API.
  • Add a footnote about embedded NULs.
  • Issue: Docs Examples Focus on Outdated Single-Phase Init Modules and Static Types #134160

📚 Documentation preview 📚: https://cpython-previews--144183.org.readthedocs.build/

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@encukou
pythongh-134160: "First extension module" tutorial improvements
5de2f0b 
- Pass -v to pip, so compiler output is visible
- Move the call ``spam.system(3)`` up so that error handling is tested
  right after it's added
- Use `PyUnicode_AsUTF8AndSize` as `PyUnicode_AsUTF8` is not in the
  Limited API.
- Add a footnote about embedded NULs.
@encukou encukou added docs Documentation in the Doc dir topic-C-API labels Jan 23, 2026
@github-project-automation github-project-automation Bot added this to Docs PRs Jan 23, 2026
@github-project-automation github-project-automation Bot moved this to Todo in Docs PRs Jan 23, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Jan 23, 2026
Docs Examples Focus on Outdated Single-Phase Init Modules and Static Types #134160
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@bedevere-app bedevere-app Bot added the awaiting core review label Jan 23, 2026
@encukou encukou added the skip news label Jan 26, 2026
@encukou

encukou commented Jan 27, 2026

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I'll merge around Friday if there are no objections.
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@encukou
encukou merged commit afc2aeb into python:main Feb 2, 2026
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@github-project-automation github-project-automation Bot moved this from Todo to Done in Docs PRs Feb 2, 2026
@bedevere-app bedevere-app Bot removed the awaiting core review label Feb 2, 2026
Aniketsy pushed a commit to Aniketsy/cpython that referenced this pull request Feb 3, 2026
@encukou @Aniketsy
pythongh-134160: "First extension module" tutorial improvements (pyth…
b9a7530 
…onGH-144183)

- Pass -v to pip, so compiler output is visible
- Move the call ``spam.system(3)`` up so that error handling is tested
  right after it's added
- Use `PyUnicode_AsUTF8AndSize` as `PyUnicode_AsUTF8` is not in the
  Limited API.
- Add a footnote about embedded NULs.
thunder-coding pushed a commit to thunder-coding/cpython that referenced this pull request Feb 15, 2026
@encukou @thunder-coding
pythongh-134160: "First extension module" tutorial improvements (pyth…
f241849 
…onGH-144183)

- Pass -v to pip, so compiler output is visible
- Move the call ``spam.system(3)`` up so that error handling is tested
  right after it's added
- Use `PyUnicode_AsUTF8AndSize` as `PyUnicode_AsUTF8` is not in the
  Limited API.
- Add a footnote about embedded NULs.
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@encukou
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