[Bug]: FURB148 triggers if index variable is used outside of the loop

[kasium]

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The Bug

The following code:

for index, value in enumerate([1, 2, 3]):
    print(value)
print(f"Last index {index}")

Emits the following error:

$ refurb foo.py
foo.py:1:5 [FURB148]: Index is unused, use `for value in [1, 2, 3]` instead

But it should not emit any error since index is used outside of the code

Version Info

Refurb: v2.0.0
Mypy: v1.10.0

Python Version

Python 3.12.0

Config File

# N/A

Extra Info

None