Can you explain what using design patterns in software development entails?

Design patterns are proven solutions to common problems in software development. They are descriptions or templates that help structure code, improve its readability, and facilitate reuse.

Using patterns helps:

• Avoid reinventing the wheel.
• Improve application architecture.
• Ease maintenance and extension of code.

An example of a pattern is Singleton, which ensures that a class has only one instance:

class Singleton:
    _instance = None

    def __new__(cls):
        if cls._instance is None:
            cls._instance = super().__new__(cls)
        return cls._instance

Thus, design patterns help create more reliable and understandable code.