Srinivas Iyyer wrote: > Dear group, > > I have a list of numbers: > > a = [10,3,4.6,2.3,4.8,10.8,4.1] > b = ['1-4','4.1-8','8.1-12','12.1-16'] > c = ((1,4),(4.1,8),(8.1-12),(12.1,16)) > > Now I want to find if elements of list a are in the > range of list b and in the range of tuple b. > > I know (and my limited knowledge on range function) is > not allowing me to think of a new way. > > Could any one please help me. > > I wish to have the answer as: > > 10 8.1-12 > 3 1-4 > etc. >
A brute-force approach is straighforward. I ignore b since it has the same values as c, and I corrected the third entry in c to be a tuple. >>> a = [10,3,4.6,2.3,4.8,10.8,4.1] >>> c = ((1,4),(4.1,8),(8.1, 12),(12.1,16)) >>> for x in a: ... for lower, upper in c: ... if lower <= x <= upper: ... print '%-5s%s-%s' % (x, lower, upper) ... 10 8.1-12 3 1-4 4.6 4.1-8 2.3 1-4 4.8 4.1-8 10.8 8.1-12 4.1 4.1-8 If a and c are large this could be slow, it could be optimized by searching in c instead of exhaustive search, or by terminating the inner loop when a match is found or when lower > x. Kent -- http://www.kentsjohnson.com _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
