How can I take random strings from a .txt file

I just started programming with python 2.7, and I have some trouble with my random generator for taking items from an outside .txt file, wondering if anyone could help me a little bit...

Basically Id like to take 100 random hits, and count them all up in the end, and print the summary for the strings. I hope it makes sense!

I know this question has been answered before, but the answeres havent helped me.

So, my txt file contains a bunch of strings, separated with commas. This is what my code looks like:

import random

fname = raw_input("Enter filename: ")
infile = open(fname,'r')
data = infile.readlines()

for i in range(100):
   print(random.uniform("Car_types.txt"))

Thanks for your help in advance!