`mypy` does not report column and error end for `ignore-without-code`
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Description
Bug Report
When calling mypy with --show-column-numbers --show-error-end the error end and column are reported.
To Reproduce
# main.py
# mypy: enable-error-code="ignore-without-code"
a: int = "a" # type: ignore
mypy --show-column-numbers --show-error-end main.py
Expected Behavior
Expected the output to contain column and error end numbers:
main.py:3:14:3:27: error: "type: ignore" comment without error code (consider "type: ignore[assignment]" instead) [ignore-without-code]
Found 1 error in 1 file (checked 1 source file)
The same way it is e.g. if the type ignore is removed in the example:
main.py:3:10:3:12: error: Incompatible types in assignment (expression has type "str", variable has type "int") [assignment]
Found 1 error in 1 file (checked 1 source file)
Actual Behavior
No column or error end is included, only the line number:
main.py:3: error: "type: ignore" comment without error code (consider "type: ignore[assignment]" instead) [ignore-without-code]
Found 1 error in 1 file (checked 1 source file)
Calling mypy with only one of the flags results in the same behavior.
Your Environment
- Mypy version used: 2.3.0 (compiled)
- Mypy command-line flags: --show-column-numbers --show-error-end
- Mypy configuration options from
mypy.ini(and other config files): no configuration - Python version used: 3.14.6 / 3.12.13
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
Reproduce the report with the shown main.py example and the mypy --show-column-numbers --show-error-end command, then trace how the ignore-without-code diagnostic is formatted. Done means the diagnostic includes the expected column and error-end values, while the existing output and summary remain correct.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 68/100