diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/email/headerregistry.py | 3 | ||||
| -rw-r--r-- | Lib/test/test_email/test_headerregistry.py | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/Lib/email/headerregistry.py b/Lib/email/headerregistry.py index 2bdae6c..468ca9e 100644 --- a/Lib/email/headerregistry.py +++ b/Lib/email/headerregistry.py @@ -7,6 +7,7 @@ Eventually HeaderRegistry will be a public API, but it isn't yet, and will probably change some before that happens. """ +from types import MappingProxyType from email import utils from email import errors @@ -456,7 +457,7 @@ class ParameterizedMIMEHeader: @property def params(self): - return self._params.copy() + return MappingProxyType(self._params) class ContentTypeHeader(ParameterizedMIMEHeader): diff --git a/Lib/test/test_email/test_headerregistry.py b/Lib/test/test_email/test_headerregistry.py index 7d64a38..55ecdea 100644 --- a/Lib/test/test_email/test_headerregistry.py +++ b/Lib/test/test_email/test_headerregistry.py @@ -1,6 +1,7 @@ import datetime import textwrap import unittest +import types from email import errors from email import policy from email.message import Message @@ -235,6 +236,8 @@ class TestContentTypeHeader(TestHeaderBase): self.assertEqual(h.maintype, maintype) self.assertEqual(h.subtype, subtype) self.assertEqual(h.params, parmdict) + with self.assertRaises(TypeError): + h.params['abc'] = 'xyz' # params is read-only. self.assertDefectsEqual(h.defects, defects) self.assertEqual(h, decoded) self.assertEqual(h.fold(policy=policy.default), folded) |