json to Python object

gistfile1.txt

input_str = "{'a':[{'b':'1','d':'3',},{'b':'2','d'='a'},{'b':'3','d':'4'}],'c':'1'}"

import json

class storage(object):
    def __init__(self, dct):
        self.__dict__ = dct

result = json.loads(input_str.replace("'",'"').replace("=", ":").replace(",}","}"), object_hook=storage)

print result.a[0].b
print result.a[1].d
print result.c