What is the output of the following Python code?def gen(): yield 1 yield 2 g = gen() print(next(g), next(g), next(g, 'end'), next(g, 'end'))

def gen():
    yield 1
    yield 2
g = gen()
print(next(g), next(g), next(g, 'end'), next(g, 'end'))

Explanation

After two values the generator is exhausted, and next(g, 'end') returns the supplied default instead of raising StopIteration each time it is called.