[Tutor] List exercise

[Anwar.Lorenzo@gmx.net]

Hi
I'm trying to solve the exercise:

As an exercise, write a loop that traverses the previous list 
(['spam!', 1, ['Brie', 'Roquefort', 'Pol le Veq'], [1, 2, 3]]) and 
prints the length of each element. What happens if you send an 
integer to len? (exercise from 8.3)

from the ebook How To Think Like A Computer Scientist: Learning with 
Python.

I've coded a function to solve this but it doesn't seem to work. IDLE 

just hangs when I execute this function.

Here's my solution:

def exerSize():
	exer = ['spam!', 1, ['Brie', 'Roquefort', 'Pol le Veq'], [1, 2, 3]]
	i = 0
	while i < len(exer):
		len(exer[i])
	i = i + 1
		

Thanks in advance!
-Anwar