Class 13, Wednesday, February 14

Nested looping, dataset analysis

In a loop, a loop — Nesting, but not like a bird — Repeating again

It’s Valentine’s Day — Give the ones you love your time— For they are fleeting

Look both ways

• Back and ahead

Agenda

• Introduce nested looping

• Continue examination of web data sets

Best sellers

• How many of these books have you read?

A tool for problem solving

• url.py

Examples

• vowely_of_the_dolls.py

• Reports on both overall and word-by-word vowel usage for user-supplied text

• the_end_of_printing.py

• Shows heretofore unspoken capability of the print() function

• nested_looper.py

• For a user-supplied n, loop n times where on the r^th iteration, the row of integers from 1 to r are printed out

• looper.py

• For a user-supplied r, the row of integers from 1 to r are printed out

• best_sellers.py

• Shows a dataset of best selling fiction

To do

• Homework

• Check out a video on nested looping. The example code is available.