merge dict in Python

merge_dict.py

#!/usr/bin/env python
#-*- coding:utf8 -*-

import json
import copy

d1 = {"l1":{"l2":{"l3":{"tps":10,"success":10,"fail":0,"time":20}}}}
d2 = {"l1":{"l2":{"l3":{"tps":20,"success":20,"fail":0,"time":20}}}}

def merge(d, one):
    for k,v in one.iteritems():
        if not k in d:
            d[k] = copy.deepcopy(v)
            continue

        if isinstance(v, int):
            if k == "time":
                d[k] = (d[k] + v)/2
                continue
            d[k] = d[k] + v
            continue

        if isinstance(v, list):
            d[k].extend(copy.deepcop(v))
            continue

        if isinstance(v, dict):
            merge(d[k], v)

def main():
    d = {}
    merge(d, d1)
    merge(d, d2)
    print(json.dumps(d1, indent=2))
    print(json.dumps(d2, indent=2))
    print(json.dumps(d, indent=2))


if __name__ == "__main__":
    main()