diff options
Diffstat (limited to 'Lib/dataclasses.py')
| -rw-r--r-- | Lib/dataclasses.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py index db14b0f66c..7d30da1aac 100644 --- a/Lib/dataclasses.py +++ b/Lib/dataclasses.py @@ -389,7 +389,8 @@ def _get_field(cls, a_name, a_type): if typing is not None: # This test uses a typing internal class, but it's the best # way to test if this is a ClassVar. - if type(a_type) is typing._ClassVar: + if (type(a_type) is typing._GenericAlias and + a_type.__origin__ is typing.ClassVar): # This field is a ClassVar, so it's not a field. f._field_type = _FIELD_CLASSVAR |