F601 Dictionary key literal repeated check of ruff is not case sensitive, but python dicts are case sensitive

[timothytrust]

Description

I have a dict as follows:

'Mio': 'million',
'MIO': 'million',
'Mrd': 'billion',
'MRD': 'billion',

Ruff marks a F601, which is - from what I know - wrong: python dict keys are case sensitive.

[VascoSch92]

Which Ruff version are you using?

I checked with the playground (here) and it seems that Ruff doesn't mark a F601 violation.

[timothytrust]

$ pip show ruff
Name: ruff
Version: 0.7.4

I just checked - you are right, I should updated. Newer versions seem to evolve quickly here!
Thanks for pointing that out.

[timothytrust]

I just checked: even after updating to latest version, this error still persists. I updated to:

$ ruff version
ruff 0.9.7 (54fccb3 2025-02-20)

[dylwil3]

Hm, unfortunately I'm still not able to reproduce this. Could you provide either a full code snippet, configuration, etc. or try to reproduce this on the playground and then click the "Share" button and copy the link here?

Here's my failed attempt at reproducing on the playground Link

[VascoSch92]

Or could you provide the Ruff error stacktrace? Thanks :)