[serhii73]

from dateparser_data.settings import default_parsers, the import shown in the settings documentation, raises AttributeError: partially initialized module 'dateparser_data.settings' has no attribute 'settings' (most likely due to a circular import) when it is the first import of the process. It works in 1.4.3 and when dateparser is imported first, which is why the test suite does not notice.

Since #1473, dateparser_data/settings.py imports dateparser._parts_of_day, which makes it import the dateparser package, which reads settings.settings back while that module is still being executed.

This adds the PARTS_OF_DAY default where the module is read (Settings._get_settings_from_pyfile) instead, so that dateparser_data.settings no longer imports dateparser. Settings adds the default to the module's dictionary when it first reads it; nothing else in the package or the docs reads that key from the module.

The new test imports the module in a fresh interpreter, because in the test process dateparser is always imported already. It fails without the change and passes with it.

Checked with a local mirror of the CI matrix (16 legs): Python 3.10 to 3.15 (3.13 also with TZ=Pacific/Auckland and TZ=Pacific/Fiji), the minimum supported dependency versions (with and without the optional ones), all optional dependencies, mypy, the docs build, the scripts, the benchmarks, twine check and the pinned pre-commit hooks. All pass.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.19%. Comparing base (2d93cdc) to head (9722cd7).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1562   +/-   ##
=======================================
  Coverage   99.19%   99.19%           
=======================================
  Files         239      239           
  Lines        4098     4099    +1     
=======================================
+ Hits         4065     4066    +1     
  Misses         33       33           

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[codspeed]

Merging this PR will not alter performance

✅ 10 untouched benchmarks

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_{Comparing serhii73:fix-parts-of-day-circular-import (9722cd7) with master (2d93cdc)}