As for urlparse_empty_bad_arg_disallow.patch, I didn't go too deep into testing it but I found that calling urlparse with different non-str args are producing different results:

urlparse({})
TypeError: unhashable type: 'slice'

urlparse([])
AttributeError: 'list' object has no attribute 'decode'

urlparse(())
AttributeError: 'tuple' object has no attribute 'decode'

I thought they should all raise a TypeError but again, I am not sure it is working as expected by the patch's author.