new_contents: import collections
  from types import SimpleNamespace
  
  
  def iter_paths(tree, parent_path=()):
      for path, node in tree.items():
          current_path = parent_path + (path,)
          if isinstance(node, collections.Mapping):
              for inner_path in iter_paths(node, current_path):
                  yield inner_path
          else:
              yield current_path
  
  def to_namespaces(dct):
      root = SimpleNamespace()
      for path in iter_paths(dct):
          prop_name = path[-1]
          path = path[:-1]
          current_namespace = root
  
          for p in path:
              if hasattr(current_namespace, p):
                  current_namespace = getattr(current_namespace, p)
              else:
                  new_namespace = SimpleNamespace()
                  setattr(current_namespace, p, new_namespace)
                  current_namespace = new_namespace
  
          v = dct
          for k in path + (prop_name,):
              v = v[k]
  
          setattr(current_namespace, prop_name, v)
  
      return root
  
  def from_namespace(namespace):
      d = {}
  
      for a in attrs(namespace):
          v = getattr(namespace, a)
          if attrs(v):
              d[a] = from_namespace(v)
          else:
              d[a] = v
  
      return d
  
  def attrs(o):
      return [x for x in dir(o) if not x.startswith('_') and not callable(getattr(o, x)) and not isinstance(o, (int, float, str, dict)) ]
subject: Add missing module