Intermission: Summary (so far)

We write programs to solve problems by,

1. Doing a sample problem by hand (so we're sure we know how to solve it).

2. Reflecting on our manual solution to identify the algorithm we are using.

3. Translating our algorithm into Python.

4. Entering, running and testing our program.

Variable names should be,

1. Meaningful.

2. Short.

3. All lowercase.

Understand the difference between print("rate") and print(rate).

A complete program includes,

1. Documentation (at least file name, author, project).

2. Sufficient interface elements to make it usable by someone other the programmer.

A program isn't finished when it runs without errors; it's finished when you've confirmed the results are correct.