id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
36242	NodeList render overhead with huge templates	Michal Čihař		"While debugging rendering of some huge templates, I've noticed that the rendering is slower and needs more memory than necessary because of:

{{{
    def render(self, context):
        return SafeString("""".join([node.render_annotated(context) for node in self]))
}}}

which unnecessarily builds a list and then passes it to join, which could directly consume an iterable.

I will prepare a pull request with a fix."	Cleanup/optimization	closed	Uncategorized	5.1	Normal	wontfix			Unreviewed	0	0	0	0	0	0