[EMAIL PROTECTED] wrote: > Is there a simple python function to return the list index of the > minimum entry in a list of lists? > ie, for [[3,3,3,3], [3,3,3,1], [3,3,3,3]] to return 2,4. > Or, same question but just for a list of numbers, not a list of lists.
In Python 2.5: Python 2.5a2 (trunk:46491M, May 27 2006, 14:43:55) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> x = [4, 4, 4, 1] >>> min(xrange(len(x)), key=x.__getitem__) 3 >>> y = [[3,3,3,3], [3,3,3,1], [3,3,3,3]] >>> min(xrange(len(y)), key=[min(z) for z in y].__getitem__) 1 >>> def multimin(listoflists): ... mins = [] ... min_indices = [] ... for sublist in listoflists: ... min_index = min(xrange(len(sublist)), ... key=sublist.__getitem__) ... min_indices.append(min_index) ... mins.append(sublist[min_index]) ... min_index = min(xrange(len(listoflists)), key=mins.__getitem__) ... return min_index, min_indices[min_index] ... >>> multimin([[3,3,3,3], [3,3,3,1], [3,3,3,3]]) (1, 3) STeVe -- http://mail.python.org/mailman/listinfo/python-list
