Python, Programming, Data Science, Artificial Intelligence, Data.
not in cls._instances: cls._instances[cls] = super().__call__(*args, **kwargs) return cls._instances[cls] class MyClass(metaclass=Singleton): def __init__(self, value): self.value = value obj1 = MyClass(1) obj2 = MyClass(2) print(obj1.value) # Output: 1 print(obj2.value) # Output: 1 In this