Exercise numbering

[eah13]

Several chapters have exercise numbering that's off.

Edit: This would be a quick fix for a new contributor to tackle! Ctrl-F for Exercise and make sure they count up correctly.

• Chapter 1
• Chapter 2
• Chapter 3
• Chapter 4
• Chapter 5
• Chapter 6
• Chapter 7
• Chapter 8
• Chapter 9
• Chapter 10
• Chapter 11
• Chapter 12
• Chapter 13
• Chapter 14
• Chapter 15

[csev]

Feel free to fix them all. The exercise numbering was done by software I wrote to automate the Tex to MKD - it probably got confused.

[eah13]

@csev would you consider some light formatting for the exercises? Maybe bolding the label?

**Exercise 1:** Type the following statements in the Python interpreter to
see what they do:

I missed the ones in the text (vs. at the end of the text) on a first glance, so the issue of numbering is probably not an issue. But I can still go through and add this format as I check

[eah13]

I'm working on this now as part of larger updates to code formatting fr the back half of the book

[csev]

This is fixed in the January 2024 version of the book