How to completely traverse a complex dictionary of unknown depth?

Question

Importing from JSON can get very complex and nested structures. For example:

{u\'body\': [{u\'declarations\': [{u\'id\': {u\'name\': u\'i\',
            


        

Answer 1

Maybe can help:

def walk(d):
    global path
      for k,v in d.items():
          if isinstance(v, str) or isinstance(v, int) or isinstance(v, float):
            path.append(k)
            print "{}={}".format(".".join(path), v)
            path.pop()
          elif v is None:
            path.append(k)
            ## do something special
            path.pop()
          elif isinstance(v, dict):
            path.append(k)
            walk(v)
            path.pop()
          else:
            print "###Type {} not recognized: {}.{}={}".format(type(v), ".".join(path),k, v)

mydict = {'Other': {'Stuff': {'Here': {'Key': 'Value'}}}, 'root1': {'address': {'country': 'Brazil', 'city': 'Sao', 'x': 'Pinheiros'}, 'surname': 'Fabiano', 'name': 'Silos', 'height': 1.9}, 'root2': {'address': {'country': 'Brazil', 'detail': {'neighbourhood': 'Central'}, 'city': 'Recife'}, 'surname': 'My', 'name': 'Friend', 'height': 1.78}}

path = []
walk(mydict)

Will produce output like this:

Other.Stuff.Here.Key=Value 
root1.height=1.9 
root1.surname=Fabiano 
root1.name=Silos 
root1.address.country=Brazil 
root1.address.x=Pinheiros 
root1.address.city=Sao 
root2.height=1.78 
root2.surname=My 
root2.name=Friend 
root2.address.country=Brazil 
root2.address.detail.neighbourhood=Central 
root2.address.city=Recife