Read a JSON file from disk into a python object

jsonToObject.py

import json

class Jsobject(dict):
    marker = object()
    def __init__(self, value=None, file=False):
        if not value:
            pass
        if file:
            f = open(value)
            value = json.loads(f.read())
        if isinstance(value, dict):
            for key in value:
                self.__setitem__(key, value[key])
        else:
            raise TypeError, 'Expected a dictionary.'

    def __setitem__(self, key, value):
        if (isinstance(value, list) and len(value) == 1 and
            isinstance(value[0], dict)):
            value = value[0]
        if isinstance(value, dict) and not isinstance(value, Jsobject):
            value = Jsobject(value)
        dict.__setitem__(self, key, value)

    def __getitem__(self, key):
        found = self.get(key, Jsobject.marker)
        if found is Jsobject.marker:
            found = Jsobject()
            dict.__setitem__(self, key, found)
        return found

    __setattr__ = __setitem__
    __getattr__ = __getitem__

if __name__ == '__main__':
    foo = Jsobject('foo.json', file=True)
    print foo.keys()