PyCharm can't find a reference yet it definitely exists

Question

I'm trying to use a thing in numpy.random which I import using from numpy.random import normal. PyCharm tells me this is an unresolved reference despite being able to find other things in numpy.random such as numpy.random.random.

Whenever I open up a Python shell and type from numpy.random import normal it runs fine and I can use normal just as I desire in the terminal.

Why is this?

Answer 1

Try File->Invalidate Caches/Restart...

This worked for me.