Currently there is no FlaggedRevs review API support in Pywikibot so it would be useful to add it there and not implement it to PendingChangesBot code.

Proposed Solution:
Add new function review() to pywikibot/site/ _apisite.py with following parameters. Add also unit tests for the new function.

• revid: The revision ID for which to set the flags
• summary: Comment for the review (optional, default "")
• flag_accuracy: Set the flag named "accuracy" to the specified value; (replace "accuracy" with the flag name to set another flag)
• unapprove : If set, revision will be unapproved rather than approved (optional, default: None)

Notes

• Test if flag-parameter is mandatory? If it is not then leave it out as unsupported parameter.
  • If it is optional, document it being optional also to mediawiki.org: Extension:FlaggedRev page.
• Pywikibot uses summary in function call parameters, FlaggedRews API uses comment as parameter name
• use Pywikibots simple_request() for calling mediawiki API (see _apisite:protect() as example)

Review user right
You can ask to be added to reviewer user group in fiwiki for developing by commenting on this phabricator ticket

Test pages
Do not review/unreview other pages than these for testing

• https://fi.wikipedia.org/wiki/Merkityt_versiot_-kokeilu/Testisivu_1
• https://fi.wikipedia.org/wiki/Merkityt_versiot_-kokeilu/Testisivu_2
• https://fi.wikipedia.org/wiki/Merkityt_versiot_-kokeilu/Testisivu_3
• https://fi.wikipedia.org/wiki/Merkityt_versiot_-kokeilu/Testisivu_4

Documentation:

• https://www.mediawiki.org/wiki/Extension:FlaggedRevs#API

Examples:

• huwiki: flaggedrevs.py (see review_id() function)
• _apisite:protect()
• tests/site_tests.py | test_protect()
• PendingChangesBot: review() -- Note: this is old and it doesn't use simple_request

Code Review Requirements:
For the patch to pass Pywikibot code review, please ensure:

1. Follow Gerrit guidelines:
   • Manual:Pywikibot/Gerrit - For_developers
   • Gerrit: Commit message guidelines
   • See also: T407059 (Pywikibot contribution howto documentation)
2. Code quality:
3. Patch must follow the Pywikibot style guide
4. No flake8 errors or warnings
   • Commit message must follow style guidelines
5. Testing:
6. Added error handling must include unit tests
7. Tests should verify proper error detection and messaging for OAuth/BotPassword scenarios