Скачать или смотреть Creating a Custom Tkinter Root Window Class: Best Practices and Insights

Learn how to properly create a custom Tkinter root window class in Python, understand the necessity of instance variables, and discover best practices in this engaging guide.
---
This video is based on the question https://stackoverflow.com/q/74941947/ asked by the user 'fmex' ( https://stackoverflow.com/u/11890484/ ) and on the answer https://stackoverflow.com/a/74942049/ provided by the user 'Bryan Oakley' ( https://stackoverflow.com/u/7432/ ) 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: Python/Tkinter: root as a class / initializing instance variables in a tkinter class

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.
---
Creating a Custom Tkinter Root Window Class: Best Practices and Insights

When building GUI applications in Python using Tkinter, one of the fundamental tasks is to create a root window. However, developers often find themselves facing questions regarding the correct approach to instantiate this root window, especially when utilizing classes. In this guide, we will discuss a specific case regarding the creation of a custom Tkinter root window class and address common queries related to instance variables.

The Problem

You’ve created a custom Tkinter root window as a class in Python, saved within a module named ModRoot. Below is the code snippet you might have written:

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

This class is instantiated as follows:

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

Common Queries

You might be asking two essential questions regarding the code:

Is the current approach to creating a root window acceptable?

Why does the program work if the instance variables are commented out?

The Solution

Let’s break down the answers to these questions to provide clarity and guidance.

1. Is the Approach Acceptable and Correct?

The answer is a resounding yes. Creating a custom root window class as you’ve done is indeed an acceptable approach in Tkinter. Defining a class that inherits from tk.Tk allows you to encapsulate all the setup related to your application’s main window, making your code more organized and maintainable.

2. Are Instance Variables Necessary?

This aspect can be a little bit tricky. Here’s a detailed breakdown:

Initialization of Instance Variables: When you declare instance variables like self.winhght, self.winwdth, and self.apptitle, you’re preparing to use these variables within other methods of your class. Their primary purpose is to store values that might be referenced later.

Functional Code Without Initialization: If your code is working correctly with these lines commented out, it suggests that you are not using these variables elsewhere in your class. This can happen if:

The values assigned to these variables are not required for any operations.

You might be using them in some way in other parts of your application not included here.

Why Might They Be Necessary?

If you plan on using these values to configure other elements of your GUI, such as setting the window title (self.title(self.apptitle)) or adjusting layout parameters based on the height and width (e.g., self.geometry(f"{self.winwdth}x{self.winhght}")), then it’s essential to keep these initializations in place.

Conclusion

In summary, you’re on the right track with your Tkinter custom root window class. While instance variables are not mandatory if not used in your current implementation, they can be extremely helpful in building more complex applications where these values must be referenced later on.

By following the practices outlined above, you can ensure your Tkinter applications are well-structured and maintainable.

Feel free to adapt your code accordingly based on your future needs. Happy coding!