Lec 4 OOP cont.

• Alias: When 2 things reference the same object

original: List[int] = [1, 2, 3]
alias: List[int] = original # refers to the same pointer
copy: List[int] = original.copy() # in a different location in computer memory
original[2] = 90 # changes the alias, but not the copy

• __str__()
  • Every class has one, we usually override
    • The default just has the pointer to the object's location in memory

class Cat
    ...
    def __str__(self):
        return "your mom"