django order_by query set, ascending and descending

Question

How can I order by descending my query set in django by date?

Reserved.objects.all().filter(client=client_id).order_by(\'check_in\')

I just

Answer 1

for ascending order:

Reserved.objects.filter(client=client_id).order_by('check_in')

for descending order:

1.  Reserved.objects.filter(client=client_id).order_by('-check_in')

or

2.  Reserved.objects.filter(client=client_id).order_by('check_in')[::-1]