Consider a simple assignment statement in Python: a=b The meaning of this statement may seem trivial. What we do here is take the value of the name b and assign it to the name a, but do we really? This is an ambiguous explanation that gives rise to a lot of questions: What does it mean for a name to be associated with a value? What is a value? What does CPython do to assign a value to a name? To get the value? Are all variables implemented in the same way? Today we'll answer these questions a...