warn when default is None and non-optional converter is used
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Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 45/100
- Issue type
- Bug
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- python
- Domain
- developer-experience
Research direction
Start by reading the optional converter work introduced in #173 and reproduce the Breaks example from the issue. Trace where converter and default validation are handled, then add a regression test showing that a non-optional converter with default=None produces a warning rather than failing only when the attribute is later used.
Written by the indexing model from the issue text.
Description
#173 introduced optional converters
i noted that attrs doesnt warm if one uses plain types as converters, but just breaks on use later
aka
@attr.s
class Breaks(object):
bad = attr.ib(default=None, convert=int)
- Dominant language
- Python
- Stars
- 5.8k
- Forks
- 480
- Avg merge
- 2h 15m
- Merged PRs (30d)
- 2
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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