Explore month layouts, leap years, and weekday calculations.
How It Works
calendar offers text and HTML calendars, leap-year checks, and weekday calculations. It uses Gregorian calendar rules and usually numbers weekdays from Monday as zero.
Step-by-Step Example
import calendar
print(calendar.isleap(2028))
print(calendar.weekday(2026, 10, 17))
print(calendar.monthrange(2026, 10)[1])Understanding the Example
- The print() call exposes the result so you can compare it with the behavior described above. Check the value and its type when experimenting.
A successful run of this example prints the following output:
True
5
31Where This Fits in a Real Program
For event timestamps, distinguish the displayed local clock from the instant that it represents. Store or exchange an unambiguous aware value, then convert it when displaying it to a user. For repeated calendar appointments, use a geographic timezone so daylight-saving rules are not lost.
Practice: Try It Yourself
Calendar formatting does not itself manage time zones.
For this exercise, predict the result before running the changed code. Then explain the difference between the original and modified cases using the actual values, not just whether the program completed.
Further Reading
Read the official Python documentation for complete parameters, return types and exceptions.
Common Beginner Mistakes
- Assuming calendar.weekday() uses Sunday as zero instead of Monday.
- Generate a compact calendar for the current month.
Key Takeaways
- Explore month layouts, leap years, and weekday calculations.
- calendar offers text and HTML calendars, leap-year checks, and weekday calculations.
- Apply the demonstrated operation to the practice input and verify its result before depending on it in a larger program.