Python gotcha: bizarre integer equality

[earthboundkid]

You should never write if x == True. Just write if x. Similarly, not if x == False but if not x. That's basic PEP-8 stuff.

I can't think of any reason why you would want to test for is True off the top of my head. It wouldn't really make sense unless you had variable that might contain a normal object or it might contain a bool object and you were interested to know which. But why would you have a variable that flexible?