How to Build a GUI Calendar Using Python
Building a calendar is a great way to learn about creating GUI applications with Python’s Tkinter module. it’s possible to use this application to manage and plan events ahead of time.
Taking it further, you could extend the app to track upcoming meetings, and set reminders. You could even introduce collaboration with other users’ calendars to avoid scheduling conflicts.
It all begins with the basic skeleton of a GUI Calendar app.
The Calendar, Tkinter, and DateTime Modules
To build the GUI Calendar, you will use the Calendar, Tkinter, and the DateTime Module. TheCalendar modulecomes with Python and enables you to execute date, month, and calendar-related actions.
Tkinter allows you to create desktop applications. It offers a variety of widgets, helpful libraries, canvas objects, and HTML/XML/PDF parsers. To build a GUI application all you need to do is:
To install Tkinter into your system, open a terminal and run:
The DateTime module is another one that’s built-in. It offers several classes that can deal with dates, times, and time intervals. With this module, you’re able to build an event scheduler,an alarm clock, a date calculator, and a time zone application.
You can find the source code of the GUI Calendar using Python in thisGitHub repository.
Begin by importing the Tkinter, Calendar, and the DateTime module. Define a function,printCalendar. Use theget()method on the Spinbox (defined later in the code) to extract the month and year the user has chosen. Pass these values to the calendar module to get a formatted text calendar representing the specified year and month. This text represents a simple monospace grid, with days arranged in weeks starting on Monday.
Clear out any existing data from the screen.1.0indicates the beginning of the field, andendindicates the end of the field. Finally, insert the calendar generated earlier and display it on the screen.
Define a function,reset. Delete the contents on the screen and set the month and year to the present and use theconfig()method to display it on the screen.
Define a function, close to destroy the window display, and exit the program.
Initialize the Tkinter instance and display the root window. Set the title, the dimensions in pixels, and disable its resizing by keeping the parameters as 0.
Define four frames for the header title, the month and year entry, the display, and the buttons. It performs the function of a container, directing the placement of other widgets. It arranges the layout and provides padding for these widgets using rectangular sections on the screen.
Organize the frames in blocks before placing them in the guiwindow using thepack()method. Set the value of expand to true to enable the widget to resize and expand in its available space. Set thefillattribute to both to allow the widget to expand to occupy the entire window in the x and the y direction.
Specify three labels for the header, month, and year. Set the parent window you want to place it in, the text it will display, the font styles along with the font color. Pack and place the labels in an appropriate position. AssociateIntVar()with theentry_frameto set and receive integer data.
Get the current month, year and set it to the IntVar() variable. Use the Spinbox widget to specify a range of values to the user. Set the range of values the Spinbox will contain, the width, the current value it should hold, and the font styles. Position the boxes appropriately.
Declare a text field and set its parent window, width, height, font style, 3D animation style, and border width. Organize the text widget and declare three buttons to display, reset, and close the window. The buttons contain an additional background-color property and a command property.
Using the command property, you may set the function it should execute once clicked. Place the buttons in a single row with ample space between each of them.
Themainloop()function tells Python to run the Tkinter event loop and listen for events (such as button presses) until you close the window.
Put all the code together to see your GUI calendar in action.
Sample Output of the GUI Calendar
On running the program above the program displays a window with the current month and date. The Reset button displays the same screen when clicked.
On setting the month to 3 and the year to 2000, the program displays the calendar for March 2000. On pressing the Close button, the program destroys the window and stops its execution.
Take On Some Beginner GUI Projects Using Python
Building GUI applications has never been so easier. Python’s Tkinter module provides many helpful widgets which you can fully customize with very little code. Along with this, you get access to layout managers such as pack, grid, and place to position elements according to your desire.
You can build a typing test game, color palette, currency converter, or calculator to get started. These applications are fun to build and will develop your object-oriented programming skills with ease.
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