[Viltrumlik]

Python's documented terminology is true/false, not truthy/falsy — see
Truth Value Testing,
Boolean Operations,
and the if
and while
statements. This replaces the five remaining occurrences in Doc/.

This supersedes @pochmann's retracted PR gh-158663 — they asked in gh-161077 for
someone else to carry the fix.

Precedent for the identical change, both merged:

• bpo-45346 Keep docs consistent regarding true and false values #28697 (bpo-45346) — "Keep docs consistent regarding true and false values"
• gh-95454: Replace truthy/falsy with true/false #95456 (Some "truthy/falsy" crept in #95454) — "Replace truthy/falsy with true/false"

Note on the tkinter wording

TRUE/YES/ON are the integer 1, not the True singleton. Starting the
sentence with "True values" capitalises the word and invites exactly the
misreading @bitdancer raised on gh-158663 — and here it would be actively
misleading, since the value is not True. Those two lines are therefore phrased
"Values that are true/false, ..." so that true/false stay lowercase and
unstyled, matching the rest of the docs (Doc/ already contains 26 instances of
"a true value" and 22 of "a false value").

Scope

Doc/ only. Deliberately left alone, as code rather than documentation:

• internal comments in Lib/pathlib/__init__.py and Lib/logging/__init__.py
• the JIT identifier _Py_uop_sym_new_truthiness
  (Python/optimizer_symbols.c, Include/internal/pycore_optimizer.h)

Verification

Every altered line is byte-identical outside the replaced words — backtick and
role-colon counts unchanged — so there is no RST syntax risk. Sphinx was not run
locally; the docs build in CI covers it.

---

Generative AI disclosure: prepared with assistance from Claude (Anthropic)
via Claude Code. I have reviewed and verified every change, the terminology
against the documentation linked above, and the two precedent PRs.

🤖 Generated with Claude Code

[python-cla-bot]

All commit authors signed the Contributor License Agreement.

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Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-11-05T17:43:35.629626Z	84c512d	PR opened

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[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #35677585 | 📁 Comparing 84c512d against main (b5bffb9)

  🔍 Preview build  

3 files changed

± builtins/functions.html
± library/smtplib.html
± library/tkinter.html

[picnixz]

they asked in gh-161077 for
someone else to carry the fix.

Where is this claim?

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[pochmann]

they asked in gh-161077 for
someone else to carry the fix.

Where is this claim?

Yeah that's not quite right. My PR got stuck in disagreements, so I was hoping someone without that problem, like a core dev working on docs, would just do it (however they see fit). But also fine if someone else gets it done. (Preferably not a clanker just doing it so its human can brag about high contribution statistics.)