style: fix black, isort and pylint failures in examples/python

[mueedx]

examples/python is not covered by CI. .github/workflows/python-precommit.yml

filters on examples/Python/** (capital P) but the directory is examples/python, and GitHub Actions path filters are case-sensitive, so the workflow has never run. The lint step also targeted application_examples examples, neither of which exists here.

A follow-up PR fixes the workflow paths. This PR clears the pre-existing debt it will surface so that PR can turn CI on green. Split deliberately: the debt here is unrelated to the path bug, and this change is mechanical and independently reviewable.

7 files touched:

• news-aggregator/main.py: E1205 x2 resolved to f-strings (logging-format-style=new per .pylintrc:396), black reformatted trailing whitespace/indentation at lines 51-53

• news-aggregator/main_sync.py: E1205 x2 resolved to f-strings

• collect_paginated_ecommerce_listing_data/main.py: W1514 + W1309 on open(); black slice spacing

• collect_paginated_news_headlines/main.py: W1514 on open()

• compare_product_prices/async_main.py: black formatting (tuple unpacking, print collapse)

• humanlike-antibot/main.py: isort import grouping

• maps_scraper/main.py: isort import grouping

Note: news-aggregator/main.py:45-47 and compare_product_prices/async_main.py:47-49 contain the same broken async with await browser.new_context() pattern as .templates/python/template_async.py:21-23. This PR reformats those lines without fixing the bug; that is left as a separate contribution.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: 0bc6c11c-4652-498b-ab24-34be26b3eeef

📥 Commits

Reviewing files that changed from the base of the PR and between e46b9d9 and 4472c49.

📒 Files selected for processing (7)

• examples/python/collect_paginated_ecommerce_listing_data/main.py
• examples/python/collect_paginated_news_headlines/main.py
• examples/python/compare_product_prices/async_main.py
• examples/python/humanlike-antibot/main.py
• examples/python/maps_scraper/main.py
• examples/python/news-aggregator/main.py
• examples/python/news-aggregator/main_sync.py

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📝 Walkthrough

Walkthrough

Two Python examples now specify UTF-8 when opening output files. The news aggregators use f-strings for log messages, with their message text unchanged. Other edits reorder imports or adjust code formatting without changing the described behavior or output.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 0402e

The examples gain consistent UTF-8 output and formatting without an identified behavioral regression. This change is mergeable after normal checks; existing workflow-path and browser-context issues remain outside its scope.

Architecture Summary

Architecture risk: 🟡 Medium · up to 4472c

The change affects 1 system.

Changed systems: examples

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — examples (service) was modified; 7 changed files map to changed impact.

Before / after behavior

• observed — Modified behavior in examples/python/collect_paginated_ecommerce_listing_data/main.py: The agentql and Playwright imports are reordered.
• observed — Modified behavior in examples/python/collect_paginated_ecommerce_listing_data/main.py: The slice expression’s spacing is adjusted; its limit and behavior are unchanged.
• observed — Modified behavior in examples/python/collect_paginated_ecommerce_listing_data/main.py: books.json is now opened with explicit UTF-8 encoding instead of the platform-default encoding.
• observed — Modified behavior in examples/python/collect_paginated_news_headlines/main.py: The agentql and paginate imports now appear before the Playwright import; the imported names are unchanged.

Reliability and maintainability

• inferred — Risk-relevant change factors for examples: blast_radius_1; direct_dependents_1

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the formatting and lint fixes in the affected examples/python files.
Description check	✅ Passed	The description directly explains the formatting and lint fixes, the CI workflow context, the files changed, and the intentionally deferred async bug fix.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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