Say I have a list composed of a number of lists of two items each:
a = [[14, 0.5], [12, 0.8], [22, 0.6], [15, 0.2], [17, 0.5], [18, 0.4]]
I need to reorder this list first according to the second items inside each list from max to min and then according to the first items from min to max.
I know how to reorder a list according to two items using the second item first and the first item second:
b = sorted(a, key=lambda item:(item[1], item[0]))
b = [[15, 0.2], [18, 0.4], [14, 0.5], [17, 0.5], [22, 0.6], [12, 0.8]]
but this returns a list ordered from min to max for both items, which is not what I need.
This is what b should look like:
b = [[12, 0.8], [22, 0.6], [14, 0.5], [17, 0.5], [18, 0.4], [15, 0.2]]