> you look up local variables in hash tables every time they are referenced. This is not what Python does: It maps variable names to integer indices during comp

> you look up local variables in hash tables every time they are referenced. This is not what Python does: It maps variable names to integer indices during compilation to bytecode, and the bytecode just takes those embedded constant indices and indexes into an array to obtain a local variable's value. This is only true for function arguments right? Module level bindings and class and object attributes are looked up in dictionaries. I think the same for variables used in closures too?