Hello Matej,

I've tried json_diff yesterday, and ran into a recursion depth error when processing some json files through the main. Nb: I was using an older version with python 2.7.

I ran some more tests, and found out that: json_diff.Comparator().compare_dicts(json.load(open(f1)), json.load(open(f2))) => works correcly json_diff.Comparator(open(f1)), open(f2)).compare_dicts() => throws a recursion depth error

I think this stems from the fact that my json contains some null values. When delving recursively into the structure, when compare_dicts encounters a null, it uses the obj1 or obj2 from the init, and starts over from the beginning.

I haven't tried to fix it yet, but I think it's not useful to store the objects in the class, and the main could call Comparator(opts=options).compare_dicts(json.load(open(f1)), json.load(open(f2)).