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| author | Iurii Kemaev <6885137+hbq1@users.noreply.github.com> | 2021-04-06 05:14:01 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-04-06 05:14:01 (GMT) |
| commit | 376ffc6ac491da74920aed1b8e35bc371cb766ac (patch) | |
| tree | 9b0561f3aa54ba7a825ebabc107afe5a73aec32a /Lib/dataclasses.py | |
| parent | 4663e5f39e9f872dcd69545f293e832d5855d084 (diff) | |
| download | cpython-376ffc6ac491da74920aed1b8e35bc371cb766ac.zip cpython-376ffc6ac491da74920aed1b8e35bc371cb766ac.tar.gz cpython-376ffc6ac491da74920aed1b8e35bc371cb766ac.tar.bz2 | |
bpo-43176: Fix processing of empty dataclasses (GH-24484)
When a dataclass inherits from an empty base, all immutability checks are omitted. This PR fixes this and adds tests for it.
Automerge-Triggered-By: GH:ericvsmith
Diffstat (limited to 'Lib/dataclasses.py')
| -rw-r--r-- | Lib/dataclasses.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/dataclasses.py b/Lib/dataclasses.py index 3de2ec0..afc4b82 100644 --- a/Lib/dataclasses.py +++ b/Lib/dataclasses.py @@ -860,7 +860,7 @@ def _process_class(cls, init, repr, eq, order, unsafe_hash, frozen): # Only process classes that have been processed by our # decorator. That is, they have a _FIELDS attribute. base_fields = getattr(b, _FIELDS, None) - if base_fields: + if base_fields is not None: has_dataclass_bases = True for f in base_fields.values(): fields[f.name] = f |