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 26520,SessionBase.pop() no longer raises a KeyError,Tobias Krönke,nobody,"The fix of #24621 led to always providing a `default` to session's dict's `pop()` method. This prevents a `KeyError` from ever being raised, which should be expected by a pop-function. Pull request is https://github.com/django/django/pull/6480",Bug,closed,contrib.sessions,1.9,Release blocker,fixed,,,Ready for checkin,1,0,0,0,1,0