Timothy Wu wrote: > Hi, > > Using generator recursively is not doing what I expect: > > def test_gen(x): > yield x > x = x - 1 > if x != 0: > test_gen(x)
The only thing that the last line does is *create* a new generator object. You need to actually iterate over it and yield its values. E.g. In [2]: def test_gen(x): ...: yield x ...: x -= 1 ...: if x != 0: ...: for y in test_gen(x): ...: yield y ...: ...: In [3]: list(test_gen(3)) Out[3]: [3, 2, 1] -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
