Description

kwsp

opened on Oct 11, 2022

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Bug report

This is very similar to #79721

from dataclasses import dataclass, astuple
from typing import DefaultDict, List
from collections import defaultdict

@dataclass
class C:
    mp: DefaultDict[str, List]

dd = defaultdict(list)
dd["x"].append(12)
c = C(mp=dd)
d = astuple(c)  # throws "TypeError: first argument must be callable or None"


assert d == ({"x": [12]},)
assert d[0] is not c.mp  # make sure defaultdict is copied

Basically applying the same fix for asdict from #32056 to astuple.

Your environment

• CPython versions tested on: 3.10.7
• Operating system and architecture: macOS, arm64

Linked PRs

• gh-98169 dataclasses.astuple support DefaultDict #98170

Activity

1. kwsp

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Oct 11, 2022
2. kwsp

   added a commit that references this issue on Oct 11, 2022

   pythongh-98169 dataclasses.astuple support DefaultDict

   81d9170
3. carljm

   added a commit that references this issue on Mar 13, 2023

   gh-98169 dataclasses.astuple support DefaultDict (#98170)

   71e37d9
4. carljm

   closed this as completedon Mar 13, 2023
5. carljm

   added a commit that references this issue on Mar 14, 2023

   Merge branch 'main' into inlinecomp2

   6c5f269
6. Fidget-Spinner

   added a commit that references this issue on Mar 27, 2023

   pythongh-98169 dataclasses.astuple support DefaultDict (python#98170)

   c54eeaf
7. warsaw

   added a commit that references this issue on Apr 11, 2023

   pythongh-98169 dataclasses.astuple support DefaultDict (python#98170)

   3f86f25

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