Singleton Pattern

Demonstrate a simple Singleton pattern implementation in Python.

IntermediateTopic: Object-Oriented Programs
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Python Singleton Pattern Program

This program helps you to learn the fundamental structure and syntax of Python programming.

Try This Code
# Program to implement a simple Singleton pattern

class Singleton:
    _instance = None

    def __new__(cls, *args, **kwargs):
        if cls._instance is None:
            cls._instance = super().__new__(cls)
        return cls._instance


s1 = Singleton()
s2 = Singleton()

print(s1 is s2)
Output
True

Understanding Singleton Pattern

Overriding __new__ ensures that only one instance of Singleton is ever created.

Note: To write and run Python programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Python Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Python programs.

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