python dict list schema

schema.py

import json


def schema(obj, parent="obj"):
    if isinstance(obj, list):
        if obj:
            last = len(obj) - 1
            schema(obj[last], f'{parent}[{last}]')
        else:
            print(f"{parent}[]")
        return
    if isinstance(obj, dict):
        for key, val in sorted(obj.items()):
            schema(val, f'{parent}["{key}"]')
        return
    try:
        loaded = json.loads(obj)
    except Exception:
        pass
    else:
        schema(loaded, f"json.loads({parent})")
        return
    print(f"{parent} = {type(obj)}")