Thanks guys!
Miss sorting when reading docs.. (
However, I just create simple "groupby":
def groupby(_list, key_func):
res = {}
for i in _list:
k = key_func(i)
if k not in res:
res[k] = [i]
else:
res[k].append(i)
return res
and it works 3 times faster then itertools.groupby for my example (for
tests I extend number of profiles)