Curry weird decorator

curry.py

import functools


def curry(calls=1):

    def decorator(f):

        @functools.wraps(f)
        def wrapper(*args, **kwargs):

            class Curry:

                def __init__(self, *args, **kwargs):
                    self.args = list(args)
                    self.kwargs = kwargs
                    self.calls = calls

                def __call__(self, *args, **kwargs):
                    self.args.extend(args)
                    self.kwargs.update(kwargs)
                    if self.calls > 1:
                        self.calls -= 1
                        return self
                    return f(*self.args, **self.kwargs)

            return Curry()(*args, **kwargs)

        return wrapper

    return decorator


@curry(2)
def add(x, y):
    print(x, y)
    return x + y

print(add)
print(add(1))
print(add(1)(2))