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
18051	flatten_fieldsets error	Riccardo Di Virgilio	mateusgondim	"hi when flattening fieldsets django checks if a fieldset has a line

if type(field) == tuple:

i've got a lot of errors because i often generate fieldsets from code, and sometime i must use list to declare lines.

maybe to avoid list problems it's better to change this line of code to

if type(field) in (tuple, list):"	Cleanup/optimization	closed	contrib.admin	1.4	Normal	fixed		nick.sandford@…	Ready for checkin	1	0	0	0	1	0