docs: def typestring(obj):
      """Make a string for the object's type
  
      Parameters
      ----------
      obj : obj
          Python object.
  
      Returns
      -------
      `str`
          String representation of the object's type. This is the type's
          importable namespace.
  
      Examples
      --------
      >>> import docutils.nodes
      >>> para = docutils.nodes.paragraph()
      >>> typestring(para)
      'docutils.nodes.paragraph'
      """
      obj_type = type(obj)
      return '.'.join((obj_type.__module__, obj_type.__name__))