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 16993,In core.cache.backends.BaseCache.default_key_func join expects character string,adsworth,adsworth,"The join in [[source:django/trunk/django/core/cache/backends/base.py#L26|core.cache.backends.BaseCache.default_key_func]] expects a character string instead of a byte string. `key_prefix` is encoded to a byte string in `BaseCache.__init__` and `key` is encoded directly in `default_key_func`. The simple solution is wrapping `key_prefix` and `key` with `str()` for which a patch is attached. fix-cache.base.backends.get_default_key.patch This feels backwards though, but I'm not sure about the best solution. How about calling smart_str on the result of the join and getting rid of the smart_str on `key_prefix` and `key`? For this solution I also attached a patch. This patch also works fine in py2.X if the key_prefix is a unicode string that contains ÖÄÜ!^. fix-cache.base.backends.get_default_key-smart_str_on_result.patch ",Bug,closed,Python 3,1.3,Normal,invalid,,adsworth,Unreviewed,1,0,0,0,0,0