Is there a way to loop or iterate through a list/tuple in such a way

that when you reach the end, you start over at the beginning? For

example, suppose I define a list "daysOfWeek" such that:

>>daysOfWeek = ['sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday']

If today is Sunday, I can set the variable "day" to today by:

>>i = iter(daysOfWeek)

day = i.next()

print day

sunday

If I want to find out the day of the week 2 days from now, then this

code works ok:

>>for x in xrange(2): day = i.next()

>>print day

tuesday

However, when extending my range beyond the number of items in the

list, I receive an error. For example, if I want to find out the day

of the week 11 days from today, I get this:

>>for x in xrange(11): day = i.next()

Traceback (most recent call last):

File "<pyshell#87>", line 1, in <module>

for x in xrange(11): day = i.next()

StopIteration

Is there a way to easily loop through a list or tuple (and starting

over at the beginning when reaching the end) without having to resort

to an "if" or "while" statement?

(My question concerns the more general use of lists and tuples, not

necessarily determining days of the week. I know about using "import

datetime" and "from calendar import weekday" but thought that using

the days of the week would best illustrate my problem.)

As always, thanks in advance.

Samir