Better illustration of Closures?

Question

I am learning Python using Dive Into Python 3 book. I like it, but I don\'t understand the example used to introduce Closures in Section 6.5.

I mean, I see how it wo

Answer 1

reading in the rules file line by line in a loop ​

line by line in a loop

loop

This will drive performance through the floor. Read once, apply many times.