On Feb 25, 3:01 am, [EMAIL PROTECTED] wrote: > In my case, I have a list of 9 tuples. Each tuple has 30 items. The first > two items are 3-character strings, the remaining 28 itmes are floats. > > I want to create a new list from each tuple. But, I want the selection of > tuples, and their assignment to the new list, to be based on the values of > the first two items in each tuple. > > If I try, for example, writing: > > for item in mainlist: > if mainlist[item][0] == 'eco' and mainlist[item][1] == 'con': > ec.Append(mainlist[item][2:]) > > python doesn't like a non-numeric index. >
try this instead: for item in mainlist: if item[0] == 'eco' and item[1] == 'con': ec.append(item[2:]) if you want numeric adressing, try: for i in range(len(mainlist)): if mainlist[i][0] == 'eco' etc. -- http://mail.python.org/mailman/listinfo/python-list