diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/os.py | 4 | ||||
| -rw-r--r-- | Lib/test/test_os.py | 3 |
2 files changed, 5 insertions, 2 deletions
@@ -648,7 +648,7 @@ class _Environ(MutableMapping): value = self._data[self.encodekey(key)] except KeyError: # raise KeyError with the original key value - raise KeyError(key) + raise KeyError(key) from None return self.decodevalue(value) def __setitem__(self, key, value): @@ -664,7 +664,7 @@ class _Environ(MutableMapping): del self._data[encodedkey] except KeyError: # raise KeyError with the original key value - raise KeyError(key) + raise KeyError(key) from None def __iter__(self): for key in self._data: diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py index b7796b5..a4be0bb 100644 --- a/Lib/test/test_os.py +++ b/Lib/test/test_os.py @@ -646,10 +646,13 @@ class EnvironTests(mapping_tests.BasicTestMappingProtocol): with self.assertRaises(KeyError) as cm: os.environ[missing] self.assertIs(cm.exception.args[0], missing) + self.assertTrue(cm.exception.__suppress_context__) with self.assertRaises(KeyError) as cm: del os.environ[missing] self.assertIs(cm.exception.args[0], missing) + self.assertTrue(cm.exception.__suppress_context__) + class WalkTests(unittest.TestCase): """Tests for os.walk().""" |