human
I am working on the file "015 - Breaking Benjamin/meta_alltheway/meta_alltheway.ipynb".
The first task is:
Make our class a Singleton
Can you write Python program for it?
 Write me a the Python program you requested?
assistant
#Here is the Python program you requested.

class Singleton(type):
    _instances = {}
    def __call__(cls, *args, **kwargs):
        if cls not in cls._instances:
            cls._instances[cls] = super().__call__(*args, **kwargs)
        return cls._instances[cls]

class SnakeSingleton(CamelToSnake, Singleton):
    pass

class MyVector(metaclass=SnakeSingleton):
    def addToVector(self, other): pass
    def subtractFromVector(self, other): pass
    def calculateDotProduct(self, other): pass
    def calculateCrossProduct(self, other): pass
    def calculateTripleProduct(self, other): pass

print([a for a in dir(MyVector) if not a.startswith('__')])
v1 = MyVector(); v2 = MyVector()
print(v1 is v2)