Outline:

1. Mini-quiz
   
2. From last time: accumulating factorial example
3. strings as sequences
   
   • Basic operations
   • split and join
4. Exercises 1 + 2
   
5. Other string methods
   
6. Exercises 3 + 4
   
7. Representing strings in computers
   
   • ASCII and Unicode, chr and ord
   • example: encoding/decoding messages
8. Exercise 5

Reading assignment (to be completed by the next class):

• Zelle sections 5.1-5.2 (pp. 129-136)
• Zelle sections 5.4-5.5 (pp. 139-147)
• Zelle section 5.7 (pp. 150-151)