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
27474	Classes attribute in admin.TabularInline	Joao	nobody	"I noticed this when using grappelli, but can confirm that the same happens with grappelli disabled and a clean set of static files.
When using the 'classes' attribute in admin.TabularInline I get the following error:
`TypeError at xx/xx/xx`
`sequence item 0: expected string or Unicode, tuple found`

I get the same error if I use a 'list' or 'None' instead of a tuple (with corresponding 'list found' and NoneType ending), which is strange since the default value for classes should be 'None'.
Both django's and grappelli's docs ask for a tuple or list, but I get no errors and everything works as expected if I simply comment out the classes line, or give it a string."	Bug	closed	contrib.admin	1.10	Normal	needsinfo	admin		Unreviewed	0	0	0	0	0	0