New submission from Dong-hee Na <donghee.n...@gmail.com>:
When I execute this script.
import inspect
from dataclasses import *
import enum
@dataclass
class SimpleDataObject(object):
field_a: int = field()
field_b: str = "asdad"
print([a[0] for a in inspect.getmembers(SimpleDataObject)])
I expected
['__annotations__', '__class__', '__dataclass_fields__',
'__dataclass_params__', '__delattr__', '__dict__', '__dir__', '__doc__',
'__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__',
'__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__',
'__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__',
'__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'field_a',
'field_b']
but got
['__annotations__', '__class__', '__dataclass_fields__',
'__dataclass_params__', '__delattr__', '__dict__', '__dir__', '__doc__',
'__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__',
'__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__',
'__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__',
'__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'field_b']
If this behavior is not intended, I propose a new patch with providing
Inspect.isdataclass for Python 3.8 and Inspect._is_dataclss for Python 3.7
https://github.com/corona10/cpython/commit/c2665176ce836a7b328ddc09c6c7d3de0a2b29a0
----------
components: Library (Lib)
files: inspect_dataclass.py
messages: 321706
nosy: corona10, eric.smith, serhiy.storchaka, yselivanov
priority: normal
severity: normal
status: open
title: inspect.getmembers does not retrive dataclass's __dataclass_fields__
properly
versions: Python 3.7, Python 3.8
Added file: https://bugs.python.org/file47693/inspect_dataclass.py
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<https://bugs.python.org/issue34122>
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