Singleton

Description

Ensures a class has only one instance and provides a global point of access to it. Often used for shared resources.

Where to use

• Logging drivers.
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• Database connections.
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• Configuration settings.

Real World Example

A 'Logger' class where every part of the app writes to the same log file via the same instance.

Code Example

class Singleton:\n    def __init__(self):\n        pass\n\n    def execute(self):\n        print('Executing Singleton')