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 27544 F() Expressions updating dates in .update() field fails Gary Graham nobody "Upon upgrading from 1.8 -> 1.10, I noticed that some code I had written now threw an error. Specifically, attempting to update datetime field's via F expression. Bisect log, about 3000 commits back -> https://dpaste.de/HGYb Branch with test showing regression -> https://github.com/tadgh/django/commit/c31133261c68b10525b8e3b34e6895a0c6ece4d0 Apparent first commit where regression occurs -> https://github.com/django/django/pull/4601/commits/ed83881e648771d22658f21b939f66e75c499864 Stacktrace from failure -> https://dpaste.de/DkSV" Bug new Uncategorized 1.10 Normal F() Unreviewed 0 0 0 0 0 0