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1What is dependency injection, and how does it improve testability in Python applications?Advanced2How would you structure a mid-sized Python project's directory layout for maintainability?Intermediate3What does "Pythonic" code mean, and how does the Zen of Python (import this) guide idiomatic style?Beginner4Why is "EAFP" (Easier to Ask Forgiveness than Permission) considered more Pythonic than "LBYL" (Look Before You Leap)?Intermediate5How would you implement the Singleton pattern in Python, and what are the caveats of doing so?Advanced
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