>>>> l = [] >>>> 0 in (l is False) > Traceback (most recent call last): > File "<stdin>", line 1, in ? > TypeError: iterable argument required
that should be clear - 0 in False can't work. >>>> (0 in l) is False > True >>>> 0 in l is False > False It seems to stem from a behaviour python exhibits in expressions like this: 3 > 2 > 1 This yields True, while (3 > 2 ) > 1 yields false. Chaining of operators gets translated like this: 3 > 2 and 2 > 1 Look in section 5.9 of the language reference. Then your expression gets translated to: 0 in l and l is False which yields False of course. -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
