On 02/08/13 18:02, Jim Mooney wrote:
I see what you mean, but I figured it can't be ambiguous if one interpretation makes no sense, and I can't see what x = [idx, (word for idx, word in S)] could possibly mean. Am I assuming too much foresight on the part of the parser or does that actually mean something?
It makes perfect sense. You can try it yourself, if you pre-define some names that get used: idx = 42 S = [(0, "fe"), (1, "fi"), (2, "fo"), (3, "fum")] x = [idx, (word for idx, word in S)] print(x) => prints [42, <generator object <genexpr> at 0xb7b7098c>] Hmmm, that's interesting. What's a generator object? py> next(x[1]) 'fe' py> next(x[1]) 'fi' py> next(x[1]) 'fo' py> next(x[1]) 'fum' py> next(x[1]) Traceback (most recent call last): File "<stdin>", line 1, in <module> StopIteration -- Steven _______________________________________________ Tutor maillist - [email protected] To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
