Python sorting
From wikinotes
foo = sorted(['z', 'b', 'a']) # new copy
sort(mylist) # mutates 'mylist'
sorted(mylist, key=lambda x: x % 2) # sort by result of 'key'
foo = sorted(['z', 'b', 'a']) # new copy
sort(mylist) # mutates 'mylist'
sorted(mylist, key=lambda x: x % 2) # sort by result of 'key'
