> In general case it won't work, because lists accept negative indexes: > http://docs.python.org/lib/typesseq.html, 3rd note.
Yes, I know! I _want_ the "3rd last list element", i.e. list[-3]. But it may be that the list does not have 3 elements. In this case, list[-3] will throw an error, cf.: >>> arr = ['a','b','c'] >>> print arr[-3] a >>> print arr[-4] Traceback (most recent call last): File "<stdin>", line 1, in ? IndexError: list index out of range >>> I thought maybe I could catch the error with try...except so that I do not need the if-test, but I don't know whether this is proper usage of the try...except structure. -- http://mail.python.org/mailman/listinfo/python-list
