Why does assigning to True/False not work as I expect?

Question

As part of answering another question, I wrote the following code whose behaviour seems bizarre at first glance:

print True                    # outputs true         


        

Answer 1

Imagine this instead:

A = True
B = False

print A           # true
A = B;  print A   # false
A = A;  print A   # false, because A is still false from before
A = not A; print A # true, because A was false, so not A is true

The exact same thing is going on, but in your version it's confusing, because you don't expect that you can redefine True and False.