gistfile1.py

def flatten(d, parent_key=''):
    items = []
    for k, v in d.items():
        new_key = parent_key + '//' +  k if parent_key else k
        if isinstance(v, collections.MutableMapping):
            items.extend(flatten(v, new_key).items())
        else:
            items.append((new_key, v)) 
    return dict(items)