On Sun, Oct 16, 2016 at 3:29 PM, Alireza Rafiei
<alireza.rafie...@gmail.com> wrote:
> What I ended up doing is:
>
>> count_list = sorted(count_list,
>> key=lambda x: (x[1], map(lambda x: -x, map(ord,
>> x[0]))),
>> reverse=True)
>
>
> which works. Now my solution is very specific to structures like [(str,
> int)] where all strs are lower case and besides ord makes it to be both
> limited in use and also more difficult to add extra levels of sorting.
Interesting. Personally, I would invert this; if you're sorting by an
integer and a string, negate the integer, and keep the string as-is.
If that doesn't work, a custom class might help.
# untested
class Record:
reverse = False, True, True, False, True
def __init__(data):
self.data = data
def __lt__(self, other):
for v1, v2, rev in zip(self.data, other.data, self.reverse):
if v1 < v2: return rev
if v2 > v1: return not rev
return False
This is broadly similar to how tuple.__lt__ works, allowing you to
flip the logic of whichever ones you like.
ChrisA
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