property_dict.py

# -*- coding: utf-8 -*-
__author__ = 'brendan'

import collections


class property_dict(collections.Mapping):
    """
    Dictionary wrapper that adapts a dict with a wrapper allowing property-style reads. Intended
    for ease of JSON accessing.
    """

    def __init__(self, d):
        self._d = d

    def __getitem__(self, key):
        return self._d[key]

    def __iter__(self):
        return iter(self._d)

    def __len__(self):
        return len(self._d)

    def __getattr__(self, attr):
        if attr in self._d:
            obj = self._d[attr]
            if isinstance(obj, dict):  # if it is a dict, apply recursively
                return property_dict(self._d[attr])
            return self._d[attr]
        else:
            raise