parameters: (self, exclude=None, only=None)
docstring: Iterates over all direct child nodes of the node.  This iterates
          over all fields and yields the values of they are nodes.  If the value
          of a field is a list all the nodes in that list are returned.
docstring_summary: Iterates over all direct child nodes of the node.  This iterates
          over all fields and yields the values of they are nodes.  If the value
          of a field is a list all the nodes in that list are returned.
docstring_tokens: Iterates over all direct child nodes of the node . This iterates over all fields and yields the values of they are nodes . If the value of a field is a list all the nodes in that list are returned .
function: def iter_child_nodes(self, exclude=None, only=None):
          """Iterates over all direct child nodes of the node.  This iterates
          over all fields and yields the values of they are nodes.  If the value
          of a field is a list all the nodes in that list are returned.
          """
          for field, item in self.iter_fields(exclude, only):
              if isinstance(item, list):
                  for n in item:
                      if isinstance(n, Node):
                          yield n
              elif isinstance(item, Node):
                  yield item
function_tokens: def iter_child_nodes ( self , exclude = None , only = None ) : for field , item in self . iter_fields ( exclude , only ) : if isinstance ( item , list ) : for n in item : if isinstance ( n , Node ) : yield n elif isinstance ( item , Node ) : yield item