code: def get_dict(dictionary, *keys,**kwargs):
      
  
      if 'default' in kwargs:
          default = kwargs['default']
      else:
          default = None
  
      existing = dictionary
      for i in range(0, len(keys)):
  
          if keys[i] in existing:
  
              existing = existing[keys[i]]
          else:
  
              return default
      return existing
docs: This function allows traversals over several keys to
      be performed by passing a list of keys::
  
      get_dict(d,key1,key2,key3) = d[key1][key2][key3]