Question

Possible Duplicate:
How to flatten a nested dictionary in python 2.7x

If I have a dictionary:

dictionaryname= { 'key1' : 'value1',
                     'key2' : 'value2',
                     'key3' : { 'key3a': 'value3a' },
                     'key4' : { 'key4a': { 'key4aa': 'value4aa',
                                           'key4ab': 'value4ab',
                                           'key4ac': 'value4ac'},
                                'key4b': 'value4b'}
                   }

How do I make it so that the result would be as follows:

key1
value1
key2
value2
key3
key3a
value3a
...

I just have to print whole dictionary, not necessarily in the right order.

If I use:

def print_all(dictionaryname):
    for i in dictionaryname:
        print i

I only get:

key1
key2
key3
...

What should I do?

Answer 1

def print_all(d):
    if isintance(d, dict):
        for k,v in sorted(d.items()):
            print k
            print_all(v)
    else:
        print d