How do I categorize a list in python by value?

Question

I have a list of data in python:

data=[90,30,13,67,85,87,50,45,51,72,64,69,59,17,22,23,44,25,16,67,85,87,50,45,51,72,59,14,50,55,32,23,24,25,37,28,39,30,33,3