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| author | Zac Hatfield-Dodds <Zac-HD@users.noreply.github.com> | 2019-11-24 10:48:48 (GMT) |
|---|---|---|
| committer | Ivan Levkivskyi <levkivskyi@gmail.com> | 2019-11-24 10:48:48 (GMT) |
| commit | 665ad3dfa9993b9a4000b097ddead4e292590e8c (patch) | |
| tree | 886741ee4ffc36e769575e51b5e576d1f8e22b02 /Lib/test | |
| parent | 041d8b48a2e59fa642b2c5124d78086baf74e339 (diff) | |
| download | cpython-665ad3dfa9993b9a4000b097ddead4e292590e8c.zip cpython-665ad3dfa9993b9a4000b097ddead4e292590e8c.tar.gz cpython-665ad3dfa9993b9a4000b097ddead4e292590e8c.tar.bz2 | |
Better runtime TypedDict (GH-17214)
This patch enables downstream projects inspecting a TypedDict subclass at runtime to tell which keys are optional.
This is essential for generating test data with Hypothesis or validating inputs with typeguard or pydantic.
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_typing.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py index ccd617c..5b4916f 100644 --- a/Lib/test/test_typing.py +++ b/Lib/test/test_typing.py @@ -3741,6 +3741,13 @@ class TypedDictTests(BaseTestCase): self.assertEqual(Options(log_level=2), {'log_level': 2}) self.assertEqual(Options.__total__, False) + def test_optional_keys(self): + class Point2Dor3D(Point2D, total=False): + z: int + + assert Point2Dor3D.__required_keys__ == frozenset(['x', 'y']) + assert Point2Dor3D.__optional_keys__ == frozenset(['z']) + class IOTests(BaseTestCase): |