code: def container(self, data=None):
          
  
          if data is None:
              data = {}
  
          root = p = d = {}
          j = 0
          k = None
          for k in self:
              d[k] = {}
              p = d
              d = d[k]
          if k is not None:
              p[k] = data
          return (root, p[k])
docs: Creates a dict built from the keys of this namespace
  
          Returns the dict created as well as the tail in a tuple
  
          Example:
  
              self.value = "a.b.c"
  
              container, tail = self.container()
              #{"a":{"b":{"c":{}}}, {}
  
              container, tail = self.container({"d":123})
              #{"a":{"b":{"c":{"d":123}}}, {"d":123}