Test 0 and false since false is 0
I was trying to solve a problem and cannot determine how to filter 0's but
I'm typing on my phone so can't paste a session, so I will attempt to apply
the Socratic method, and ask: Do you understand why your attempts have
failed so far? In what way are False and 0 the same? In what respects do
they differ? Hint: think class relationships.
Not trying to be difficult. Just thought I'd change things up a bit. If you
come away with a bit deeper appreciation of Python's type system, you'll be
a bit better off down the road.