New submission from Anton Abrosimov :
1. Move internal dependencies (`FrameSummary`, `StackSummary`) to class
attributes. Reduce coupling.
2. Separate receiving, processing and presenting traceback information.
How to replace `repr` with `pformat` in `FrameSummary`?
def __init__
Anton Abrosimov added the comment:
I think now is a good time for such a change. `FrameSummary`,` StackSummary`
and `TracebackException` can be left backward compatible. And PEP 657 already
breaks backward compatibility of output parsers
New submission from Anton Abrosimov :
I want to add `abc.Mapping` extension to `dataclasses.dataclass`.
Motivation:
1. `asdict` makes a deep copy of the `dataclass` object. If I only want to
iterate over the `field` attributes, I don't want to do a deep copy.
2. `dict(my_dataclass)` c
Anton Abrosimov added the comment:
Thanks for the answer, I agree.
The implementation should be like this?
from collections.abc import Mapping
from dataclasses import dataclass, fields, _FIELDS, _FIELD
class _DataclassMappingMixin(Mapping):
def __iter__(self):
return (f.name for
Anton Abrosimov added the comment:
An alternative way:
from collections.abc import Mapping
from dataclasses import dataclass, fields, _FIELDS, _FIELD
class DataclassMappingMixin(Mapping):
def __iter__(self):
return (f.name for f in fields(self))
def __getitem__(self, key
Anton Abrosimov added the comment:
I think the second option looks better.
More pythonic.
No need to create new classes
No typing hacks.
Mixin can be easily expanded.
Yes, I will do refactoring, typing, documentation and tests in PR.
--
___
Python
Anton Abrosimov added the comment:
This Mixin only works with dataclass objects. And uses the private
functionality of the dataclasses. So dataclasses.py is the right place for
this. I think I can do enough tests.
And I think that this is too little for a standalone project
Anton Abrosimov added the comment:
Thanks for the good offer, I will definitely use it.
--
___
Python tracker
<https://bugs.python.org/issue42742>
___
___
Pytho
Anton Abrosimov added the comment:
Link to python-ideas thread:
https://mail.python.org/archives/list/python-id...@python.org/thread/XNXCUJVNOOVPAPL6LF627EOCBUUUX2DG/
--
___
Python tracker
<https://bugs.python.org/issue42
