Example of subclassing string Template in Python

Subclassing string.Template in Python is a powerful way to customize and extend the functionality of string formatting and templating. In this tutorial, I will show you how to create a custom subclass of string.Template and provide code examples to illustrate its usage.
string.Template is a part of the Python standard library and is used for string interpolation and templating. It provides a simple and safe way to perform variable substitution in a template string. Subclassing string.Template allows you to create custom templates with additional functionality.
To create a custom string.Template subclass, you need to define a new class that inherits from string.Template and add your own methods or override existing ones. Let's go through the steps with an example.
In this example, we've created a custom MyTemplate class, which inherits from string.Template. We've also customized the delimiter and idpattern attributes to change the template variable format. You can add your own methods, like custom_method, and override existing methods for your specific needs.
To use your custom string.Template subclass, follow these steps:
Create an instance of your custom template class.
Use the substitute or safe_substitute methods to perform variable substitution in the template.
Here's an example of how to use the custom template:
You can also call the custom methods you defined in your subclass, such as custom_method.
You can further extend and customize your MyTemplate class by adding more methods and attributes to tailor it to your specific use case. The possibilities are endless, allowing you to create powerful and flexible templating systems for your applications.
Subclassing string.Template is a great way to build custom templates that meet your unique requirements while benefiting from the safety and simplicity of the standard library's templating capabilities.
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