Python Calendar – The Perfect Timekeeper for Busy People

The calendar module in Python provides functions for working with dates and calendars. It includes functions for generating calendars, converting between different calendar systems, and performing calendar arithmetic.

Here are a few examples of how to utilise Python’s calendar module:

To print a calendar for a given month and year, you can use the monthcalendar() function. This function returns a list of lists, where each inner list represents a week in the calendar and each element in the inner list is an integer representing the day of the month. For example:

import calendar

cal = calendar.monthcalendar(2022, 12)
for week in cal:
    print(week)

This will print the calendar for December 2022:

week1 = [0, 0, 1, 2, 3, 4, 5]
week2 = [6, 7, 8, 9, 10, 11, 12]
week3 = [13, 14, 15, 16, 17, 18, 19]
week4 = [20, 21, 22, 23, 24, 25, 26]
week5 = [27, 28, 29, 30, 31, 0, 0]

To convert a date to a different calendar system, you can use the converted_time() function. This function takes a tuple representing a date (year, month, day) and a calendar system, and returns a tuple representing the same date in the specified calendar system. For example:

import calendar

date = (2022, 12, 17)
julian_date = calendar.timegm(calendar.timegm(date))
print(julian_date)

To perform calendar arithmetic, you can use the datetime module in combination with the calendar module. The datetime module provides classes for representing dates and times, and the calendar module provides functions for performing arithmetic with datetime objects. For example:

import calendar
from datetime import datetime, timedelta

today = datetime.today()
next_week = today + timedelta(weeks=1)
next_week_cal = calendar.monthcalendar(next_week.year, next_week.month)
print(next_week_cal)

This will print the calendar for the month that starts one week from today’s date.

The calendar module in Python provides a wide range of functions for working with dates and calendars. It can be useful for tasks such as generating calendars, converting between calendar systems, and performing calendar arithmetic.

This module allows you to output calendars similar to the Unix cal programme and provides extra calendar-related functions. These calendars, by default, have Monday as the first day of the week and Sunday as the last (the European convention).

Set the first weekday to Sunday (6) or any other weekday with setfirstweekday (). Date parameters are specified as integers. See also the datetime and time modules for comparable capabilities.