Merge sorted lists in python

Question

I have a bunch of sorted lists of objects, and a comparison function

class Obj :
    def __init__(p) :
        self.points = p
def cmp(a, b) :
    return a.p         


        

Answer 1

I don't know whether it would be any quicker, but you could simplify it with:

def GetObjKey(a):
    return a.points

return sorted(a + b + c, key=GetObjKey)

You could also, of course, use cmp rather than key if you prefer.