from contextlib import contextmanager
from uuid import uuid4

class MultiStopIteration(StopIteration):
    def __init__(self, uuid):
        self.uuid = uuid
    def throw(self):
        raise self

@contextmanager
def multibreak():
    uuid = uuid4()
    try:
        yield MultiStopIteration(uuid).throw
    except MultiStopIteration as e:
        if e.uuid != uuid:
            raise

with multibreak() as stop1:
    for x in range(1, 4):
        for y in range(1, 4):
            with multibreak() as stop2:
                for z in range(1, 4):
                    print(x, y, z)
                    stop1()