2009/8/28 hoffik <be...@seznam.cz>: > > Hello, > > I'm quite new in Python and I have one question. I have a 2D matrix of > values stored in list (3 columns, many rows). I wonder if I can select one > column without having to go through the list with 'for' command. > ...
I guess, it won't be possible without an explicit or implicit loop; you may try: >>> from operator import itemgetter >>> nested_list = [[1, 2, 3], [10, 20, 30], [100, 200, 300]] >>> map(itemgetter(1), nested_list) [2, 20, 200] >>> vbr -- http://mail.python.org/mailman/listinfo/python-list