Variables - C++ vs. Python
In C++, a variable is some space reserved in memory, and has a type, a name, and a value assigned to it.
This is NOT how you should think of variables in Python. Variables in Python are more like pointers (but without the complications of C++ pointers). They point to some object in the heap (dynamic memory allocation).
Recall that in C++, a pointer is a variable where the value is an address of what it is pointing to. A pointer variable is also statically bound to be of a certain type. For our purposes, we only consider a pointer to be pointing to a location in the memory heap.
In Python, a variable is simply a label (or a nickname) that always points to an object in the memory heap (remember, everything is an object in Python, including None). That’s it.
Unlike in C++, a variable does not even have a type. It simply points to an object (which has a type!)
Also, unlike C++, you do not need to worry about having to delete anything. These will automagically be done for you in the background, while you concentrate on things that really matter!