test: Enable ruff E713 lint #34154

1. 
   maflcko commented at 7:26 am on December 26, 2025: member

   Membership tests of the form not item in stuff may be confusing, because they could be read as (not item) in stuff, which is different.

   So enable the ruff E713 lint, which should also help to avoid having to go through review cycles for this.

2. test: Enable ruff E713 lint fab300b378
3. DrahtBot added the label Tests on Dec 26, 2025
4. 
   DrahtBot commented at 7:26 am on December 26, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/34154.

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   ACK	rkrux, bensig, l0rinc

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   Conflicts

   Reviewers, this pull request conflicts with the following ones:

   • #34098 (test: [move-only] Move lint functions into modules by maflcko)

   If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

5. rkrux approved
6. 
   rkrux commented at 8:31 am on December 26, 2025: contributor

   lgtm crACK fab300b378941a233119805c0d62198596a57790

   So enable the ruff E713 lint, which should also help to avoid having to go through review cycles for this.

   Thanks for enabling it globally, unrelated lint changes were indeed distracting in #33014 (review).

7. 
   bensig commented at 7:16 am on January 3, 2026: contributor

   ACK fab300b378941a233119805c0d62198596a57790

   x not in y is clearer than not x in y - good to have this enforced.

8. 
   l0rinc commented at 10:05 pm on January 3, 2026: contributor

   Recreated the change locally, ended up with the same state.

   ACK fab300b378941a233119805c0d62198596a57790

9. fanquake merged this on Jan 4, 2026
10. fanquake closed this on Jan 4, 2026

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11. maflcko deleted the branch on Jan 5, 2026

Contributors
maflcko DrahtBot rkrux bensig l0rinc

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