Steven D'Aprano wrote: > Sorting in reverse does not give the same result as sorting then > reversing. > > It's easiest to see with a key function: > > > py> a = ['fox', 'dog', 'DOG', 'cat', 'ape'] > py> b = a[:] > py> a.sort(key=str.lower, reverse=True) > py> b.sort(key=str.lower) > py> b.reverse() > py> a > ['fox', 'dog', 'DOG', 'cat', 'ape'] > py> b > ['fox', 'DOG', 'dog', 'cat', 'ape'] > > > Sorting in reverse keeps the initial order of any equal elements > unchanged. Sorting, then reversing, reverses them.
If there were no reverse flag you could reverse, then sort, then reverse again. > (Thanks to Tim Peters for the tip.) -- https://mail.python.org/mailman/listinfo/python-list
