F401 unused import false negative #4656
Description
False negative
import importlib # this package is unused, but not detected
import importlib.util
package = "ruff"
is_present = importlib.util.find_spec(package)
When from importlib import util is used, correct behaviour is observed
import importlib # this package is unused, and detected
from importlib import util
package = "ruff"
is_present = util.find_spec(package)
Ruff 'v0.0.270'
(hope I'm overlooking some submodule complexity in the general case, but it seems that in this specific case import importlib can be safely removed)