fix: restore datetime/decimal attributes on python_utils.types

Master leaked datetime and decimal as module attributes via module-level
imports; moving the aliases into _aliases dropped them. Re-add them with
regression tests, plus a star-import smoke test for the lazy package
namespace.

Author: wolph

_python_utils_tests/test_aliases.py

@@ -51,6 +51,21 @@ def test_types_reexports_aliases_identically() -> None:
         assert getattr(types, name) is getattr(_aliases, name), name
 
 
+def test_types_still_exposes_datetime_and_decimal() -> None:
+    """Keep ``datetime`` and ``decimal`` as ``types`` module attributes."""
+    # Backwards compatibility: on 3.x these leaked as module attributes via
+    # module-level imports, so `from python_utils.types import datetime` and
+    # attribute access both worked. Moving the aliases into _aliases must not
+    # drop them.
+    import datetime
+    import decimal
+
+    from python_utils import types
+
+    assert types.datetime is datetime
+    assert types.decimal is decimal
+
+
 def test_types_still_exposes_typing_extensions_surface() -> None:
     """The ``types`` facade still re-exports ``Self``."""
     # The facade must keep re-exporting typing_extensions (e.g. Self).

_python_utils_tests/test_lazy_imports.py

@@ -83,6 +83,16 @@ def test_dir_lists_lazy_submodules() -> None:
     assert set(python_utils.__all__) <= names
 
 
+def test_star_import_resolves_all_names() -> None:
+    """Bind every ``__all__`` name via a package star-import."""
+    # `from python_utils import *` goes through __getattr__ for every name in
+    # __all__; none may raise AttributeError, and all must be bound.
+    namespace: dict[str, object] = {}
+    exec('from python_utils import *', namespace)  # noqa: S102
+    missing = set(python_utils.__all__) - set(namespace)
+    assert not missing
+
+
 @pytest.mark.asyncio
 async def test_aio_timeout_generator_default_iterable() -> None:
     """Default the iterable to ``aio.acount`` when omitted."""

python_utils/types.py

@@ -12,6 +12,10 @@
 # pyright: reportWildcardImportFromLibrary=false
 # ruff: noqa: F405
 
+# Kept as public module attributes for backwards compatibility:
+# `from python_utils.types import datetime, decimal` worked in 3.x.
+import datetime as datetime
+import decimal as decimal
 from re import Match, Pattern
 from types import *  # pragma: no cover  # noqa: F403
 from typing import *  # pragma: no cover  # noqa: F403