seniorPython
Design Patterns: Singleton
Updated May 4, 2026
Short answer
Ensuring a class has only one instance.
Deep explanation
Using __new__ or a decorator to return the same instance every time the class is called.
Unlock with a Pro subscription to view this section.
View pricingReal-world example
No real-world example available yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProCommon mistakes
No common mistakes listed yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProFollow-up questions
No follow-up questions available yet.
Unlock with a Pro subscription to view this section.
Upgrade to Pro