Mixing generators and recursion

[Gerson Kurz]

No, it has nothing to do with the pathname. Try this:

def f(nested):
    if not nested:
        f(True)
    else:
        yield 42
    
for k in f(False): print k

Step through it in the mind: 
- f(False) gets called
- it is not nested, so f(True) gets called
- it is nested, so should yield 42 - but it doesn't!
- instead, you get an empty list.