HTMLify

from time import sleep

class FooBar:
    def __init__(self, n):
        self.n = n
        self.next = "foo"


    def foo(self, printFoo: 'Callable[[], None]') -> None:
        
        for i in range(self.n):
            while self.next != "foo":
                sleep(0.001)
            # printFoo() outputs "foo". Do not change or remove this line.
            printFoo()
            self.next = "bar"


    def bar(self, printBar: 'Callable[[], None]') -> None:
        
        for i in range(self.n):
            while self.next != "bar":
                sleep(0.001)
            # printBar() outputs "bar". Do not change or remove this line.
            printBar()
            self.next = "foo"