Print Python Objects as JSON

dbg.py

import json
def dbg(obj,msg=""):
    "Print nested data structures recursively for debugging."
    def get_serializable(obj):
        if hasattr(obj,"__dict__"):
            return obj.__dict__
        else:
            return obj
    print(msg, json.dumps(obj, default=get_serializable, sort_keys=True, indent=2))