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

Use the bisect module. From the documentation: "This module provides support for maintaining a list in sorted order without having to sort the list after each insertion."

import bisect

def magic(*args):
    r = []
    for a in args:
        for i in a:
            bisect.insort(r, i)
    return r