if statement depending on list len

I got a list looking like this:

MyList = ("start_stop,start_stop")

This list can be as long as you can possibly imagine.

I want to search a file for every range given by the user.

if int(line.split("\t")[4] in xrange(start,stop),xrange(start,stop):

this works with the example list of 2 ranges. but I want it to work with whatever amount of ranges the user gives as input.

anyone able to help me out?