Explanation

• The Singleton Pattern is a creational design pattern that ensures a class has only one instance, and provides a global point of access to that instance.
• “Single Instance”: The Singleton ensures that only one object of the class is created throughout the application.
• Use Case: Useful when you need to control access to shared resources, like database connections or logging.

Steps

• Make the constructor of the class private to prevent direct instantiation.
• Provide a static method that will return the single instance of the class.

class Singleton:
    _instance = None
 
    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(Singleton, cls).__new__(cls)
        return cls._instance
 
# Singleton usage
singleton1 = Singleton()
singleton2 = Singleton()
 
print(singleton1 is singleton2)  # Output: True (Both are the same instance)