https://bugzilla.wikimedia.org/show_bug.cgi?id=64494
--- Comment #1 from akkakk_bugzilla@yahoo.de --- code to reproduce:
#!/usr/bin/python # -*- coding: utf-8 -*- import pywikibot site = pywikibot.Site("wikidata", "wikidata") repo = site.data_repository() q = "Q5281234" item_obj = pywikibot.ItemPage(repo, q) content = item_obj.get() descriptions = content['descriptions'] descriptions['en'] = "Wikimedia disambiguation page" item_obj.editDescriptions(summary=u"testing for https://bugzilla.wikimedia.org/show_bug.cgi?id=64494", descriptions=descriptions) print("please check that https://www.wikidata.org/wiki/Q5281234 hasn't change")