Sorted function in python

Question

I have written a program which must sort the following:

unsorted_list=[['le', 5], ['aab', 4], ['aaa', 5]]

to:

[['aaa', 5], ['le', 5], ['aab', 4]]

It should be sorted by number. If the numbers are the same then it should sort alphabetical. I have the following code:

def sortItem(lista):
    ''' func for sort by item'''
    return lista[1]
sorted(unsorted_list, key=sortItem, reverse=True)

Unfortunately, it does not return string alphabetical. Any suggestion how to do it?

Answer 1

Since x[1] is an integer, you can sort it from maximum to minimum simply by negating it:

sorted(unsorted_list, key=lambda x: (-x[1], x[0]))

The tuples created in key will be sorted according to the first element (-x[1]), then by second element (x[0]). This corresponds exactly to your logic:

"So, it means than it is sorted by number but if numbers are the same the sort will be alphabetical."

Answer 2

In [2]: l = [['le', 5], ['aab', 4], ['aaa', 5]]

In [3]: sorted(l, key=lambda (x,y):(-y,x))
Out[3]: [['aaa', 5], ['le', 5], ['aab', 4]]