https://bugzilla.wikimedia.org/show_bug.cgi?id=55316
--- Comment #3 from Kunal Mehta (Legoktm) legoktm.wikipedia@gmail.com --- I guess this is still valid. It depends on the way {{delete}} templates are placed on the redirect. If it is in fron of the #redirect tag that page is no longer recognized as a redirect page and pywikibot.Page.isredirect() returns False.