def bar():
    for k in range(3):
        return

def baz():
    for k in range(3):
        return

def kar():
    for k in range(3):
        return

def foo():
    yield 3
    yield 7
    for i in range(3):
        [bar, baz, kar][i]()
        yield i

def f():
    for k in range(100000):
        list(foo())
f()