parameters: (self, tag=None)
return_statement: return self._root.iter(tag)
docstring: Create and return tree iterator for the root element.
  
          The iterator loops over all elements in this tree, in document order.
  
          *tag* is a string with the tag name to iterate over
          (default is to return all elements).
docstring_summary: Create and return tree iterator for the root element.
docstring_tokens: Create and return tree iterator for the root element .
function: def iter(self, tag=None):
          """Create and return tree iterator for the root element.
  
          The iterator loops over all elements in this tree, in document order.
  
          *tag* is a string with the tag name to iterate over
          (default is to return all elements).
  
          """
          # assert self._root is not None
          return self._root.iter(tag)
function_tokens: def iter ( self , tag = None ) : # assert self._root is not None return self . _root . iter ( tag )