Accessing dictionary of dictionary in python

Question

Hi in my code there is a dictionary of dictionary.

nrec={\'bridge\': \'xapi1\', \'current_operations\': {}, \'uuid\': \'9ae5ca7d-e7d6-7a81-f619-d0ea33efb534\', \         


        

Answer 1

You've got the answer

nrec["other_config"]["is_guest_installer_network"]== "true"

can be written like

if nrec.has_key("other_config") and type(nrec["other_config"]) == type({}) and nrec["other_config"].has_key("....") and nrec["other_config"]["is_guest_installer_network"]== "true":

But this is sort of ugly.

Or, as noted in the comments

nrec.get("other_config",{}).get("is_guest_installer_network",{}) == "true"

But this doesn't handle the type checking.

Maybe best to do something like this

def traverse(_dict, keys):
    val = _dict
    for key in keys[:-1]:
        if key in val and type(val[key]) is dict :
            val = val[key]
        else:
            return None
    return val.get(keys[-1],None)