In next super-primitive code when __new__ method is defined __init__ method for created objects is not called.

class NaiveSingleton:

    def __new__(cls):
        pass

    def __init__(self):
        print("NaiveSingleton init called")

so, call

    nsA1 = NaiveSingletonA()
    nsA2 = NaiveSingletonA()

brings no __init__ printout. Why?

Second question:
Why definition of empty __new__ method make this class work as singleton?