Iterating through nested dictionaries
- by Framester
I want to write an iterator for my 'toy' Trie implementation.
Adding already works like this:
class Trie:
def __init__(self):
self.root = dict()
pass
def add(self, string, value):
global nops
current_dict = self.root
for letter in s:
nops += 1
current_dict = current_dict.setdefault(letter, {})
current_dict = current_dict.setdefault('value', value)
pass
The output of the adding looks like that:
trie = Trie()
trie.add("hello",1)
trie.add("world",2)
trie.add("worlds",12)
print trie.root
{'h': {'e': {'l': {'l': {'o': {'value': 1}}}}}, 'w': {'o': {'r': {'l': {'d': {'s': {'value': 2}, 'value': 2}}}}}}
I know, that I need a __iter__ and next method.
def __iter__(self):
self.root.__iter__()
pass
def next(self):
print self.root.next()
But AttributeError: 'dict' object has no attribute 'next'. How should I do it?
[Update] In the perfect world I would like the output to be one dict with all the words/entries with their corresponding values.
