False Unused Import Statement in PyCharm?

Question

Given this scenario:

b.py:

import A # A is unused here 

c.py:

from b import A # A is used here 

PyCharm complains in b.py that import A is an unused import and Optimize imports deletes it, breaking import in c.py.

I know these chained imports are not a good practice (although you may use it to implement a facade module), but is it me or is it a PyCharm fail?

Answer 1

You can actually use the PyUnresolvedReferences marker to deactivate the inspection for your import statement:

# noinspection PyUnresolvedReferences import A 

Reference: PyCharm bug PY-2240