Introduction Recipe 3.1. Calculating Yesterday and Tomorrow Recipe 3.2. Finding Last Friday Recipe 3.3. Calculating Time Periods in a Date Range Recipe 3.4. Summing Durations of Songs Recipe 3.5. Calculating the Number of Weekdays Between Two Dates Recipe 3.6. Looking up Holidays Automatically Recipe 3.7. Fuzzy Parsing of Dates Recipe 3.8. Checking Whether Daylight Saving Time Is Currently in Effect Recipe 3.9. Converting Time Zones Recipe 3.10. Running a Command Repeatedly Recipe 3.11. Scheduling Commands Recipe 3.12. Doing Decimal Arithmetic Recipe 3.13. Formatting Decimals as Currency Recipe 3.14. Using Python as a Simple Adding Machine Recipe 3.15. Checking a Credit Card Checksum Recipe 3.16. Watching Foreign Exchange Rates |