def visit_tuple(self, node, parent):
context = self._get_context(node)<EOL>newnode = nodes.Tuple(<EOL>ctx=context, lineno=node.lineno, col_offset=node.col_offset, parent=parent<EOL>)<EOL>newnode.postinit([self.visit(child, newnode) for child in node.elts])<EOL>return newnode<EOL>
visit a Tuple node by returning a fresh instance of it