Скачать или смотреть How to Determine Which Button is Clicked in Tkinter

Learn how to effectively manage button clicks in `Tkinter` without duplicating code. Find a streamlined way to execute task-specific code with a single function.
---
This video is based on the question https://stackoverflow.com/q/65176822/ asked by the user 'Arya' ( https://stackoverflow.com/u/13822918/ ) and on the answer https://stackoverflow.com/a/65176949/ provided by the user 'Utsav Talwar' ( https://stackoverflow.com/u/14777899/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to know whether a button is clicked in tkinter?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding Button Clicks in Tkinter

When working with Tkinter, Python's standard GUI (Graphical User Interface) toolkit, you may find yourself needing to perform different actions based on which button is clicked. This is a common scenario, especially when you want to keep your code neat and avoid redundancy. In this guide, we will explore a simple and effective way to determine which button was clicked without duplicating code.

The Problem

Consider the following situation: You have two buttons, and you want to perform a specific task when either button is clicked. However, you don't want to repeat a large block of code for each button's function due to the risk of errors and to keep your code clean. Here’s the initial code snippet that presents the problem:

[[See Video to Reveal this Text or Code Snippet]]

In this code, both buttons call the same function, hey(), but you need to differentiate which button has been pressed. Let’s break down how to solve this challenge.

The Solution: Using Parameters in Functions

To tackle this issue, you can use a parameter in the function that will indicate which button was pressed. This way, you can determine the flow of the program without lessening the readability or maintainability of your code. Here’s how to implement this:

Step 1: Modify the Button Command

Instead of directly calling the function hey() from the button commands, modify it to pass a boolean flag that indicates which button was clicked. Here’s an updated version of the button creation:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Update the Function Definition

Now, adjust your hey() function to accept a parameter that will determine the flow of execution. Here’s the revised function:

[[See Video to Reveal this Text or Code Snippet]]

Full Implementation

Here’s the complete code with the modifications integrated:

[[See Video to Reveal this Text or Code Snippet]]

Benefits of this Approach

Cleaner Code: This solution eliminates the need for duplicating the code that follows the button click handling process.

Flexibility: You can easily add more buttons by following the same pattern without modifying the core logic of your program.

Maintainability: Eases future updates and adjustments since there's minimal redundancy.

Conclusion

In this guide, we explored a practical approach to handling button clicks in Tkinter. The method discussed not only addresses the problem of redundancy but also enhances the overall readability and maintainability of your GUI applications. Implementing a parameterized function for button handling is a simple yet powerful strategy that every Tkinter developer should consider!