Detailed Description ---------------------
l1 = [] l2 = [ ((3,8),(1,2)), ((1,3),(1,7)), ((7,0),(1,8)), ((4,2),(1,2)), ((2,9),(9,1)) ] I need to take each item from l2 and insert into l1 with first element(column)(3,1,7,4,2) sorted in ascending order and second element(column)(8,3,0,2,9) sorted in descending order. #SORTING for k in l2: flag=True for i, v in enumerate(l1): if v <= k: l1.insert(i,k) flag = False break if flag: l1.append(k) for a in l1: print a output ------- ((7, 0), (1, 8)) ((4, 2), (1, 2)) ((3, 8), (1, 2)) ((2, 9), (9, 1)) ((1, 3), (1, 7)) This will not give l1 with first element(column)(3,1,7,4,2) sorted in ascending order and second element(column)(8,3,0,2,9) sorted in descending order. -------------- I added a -ve signe to all first elements l2 = [ ((-3,8),(1,2)), ((-1,3),(1,7)), ((-7,0),(1,8)), ((-4,2),(1,2)), ((-2,9),(9,1)) ] #SORTING for k in l2: flag=True for i, v in enumerate(l1): if v <= k: l1.insert(i,k) flag = False break if flag: l1.append(k) for a in l1: print a output ------- ((-1, 3), (1, 7)) ((-2, 9), (9, 1)) ((-3, 8), (1, 2)) ((-4, 2), (1, 2)) ((-7, 0), (1, 8)) Now output is similar to first elements asc and second elements desc.But the problem is the -ve sign, i dont need that. Have any other method to do it?? -- http://mail.python.org/mailman/listinfo/python-list