`enum.Enum` should not be callable
Open
Nobody has claimed this yet.
bug
topic-enum
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- PR merge metrics
- PR metrics pending
Description
Bug Report
enum.Enum shouldn't be callable
To Reproduce
import enum
enum.Enum()
Expected Behavior
Error about calling enum.Enum. Here's runtime output:
Traceback (most recent call last):
File "/Users/a5rocks/Documents/mypy/repro.py", line 3, in <module>
enum.Enum()
~~~~~~~~~^^
TypeError: EnumType.__call__() missing 1 required positional argument: 'value'
Actual Behavior
No errors.
Your Environment
- Mypy version used:
1.19.0+dev.35e843cc38cedc1bdf87d9937c06d51189ad0e45 - Mypy command-line flags:
--cache-dir /dev/null - Mypy configuration options from
mypy.ini(and other config files): N/A - Python version used: 3.13.7
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.
Research direction
Start with the reported enum.Enum() reproduction and run mypy with --cache-dir /dev/null to confirm the missing diagnostic. Trace the callable handling for enum.Enum, then add a regression test showing that calling it is rejected while valid enum usage remains accepted.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100