python / python/mypy

errors in other files are reported when running mypy on a file with lowercase drive letter

Open
#18,590 3 comments 1 reaction 0 assignees View on GitHub

Nobody has claimed this yet.

bug
Dominant language
Python
Stars
20.6k
Forks
3.3k
PR merge metrics
PR metrics pending

Description

# foo.py
from sandpit.bar import asdf
# bar.py
asdf: int = ""
> mypy c:\Users\user\project\sandpit\foo.py
c:\Users\user\project\sandpit\bar.py:1: error: Incompatible types in assignment (expression has type "str", variable has type "int")  [assignment]
Found 1 error in 1 file (checked 1 source file)
> mypy C:\Users\user\project\sandpit\foo.py
Success: no issues found in 1 source file

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the behavior with the shown foo.py and bar.py files and both lowercase- and uppercase-drive mypy commands. Trace how the input path is resolved and compared on Windows. Done means both drive-letter forms produce the same diagnostics for the single checked file.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.