8.1. Iteration Revisited¶
Computers are often used to automate repetitive tasks. Repeating identical or similar tasks without making errors is something that computers do well and people do poorly.
Repeated execution of a sequence of statements is called iteration. Because
iteration is so common, Python provides several language features to make it
easier. We’ve already seen the
for statement in a previous chapter. This is a very common
form of iteration in Python. In this chapter
we are going to look at the
while statement — another way to have your
program do iteration.