python interview questions for experienced
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title: mastering python interview questions for experienced developers
congratulations on reaching the experienced developer level! as you gear up for python interviews, it's crucial to be well-prepared for both technical and conceptual questions. in this tutorial, we'll cover some common python interview questions and provide code examples to help you ace your next interview.
question: can you explain how decorators work in python?
answer:
in this example, my_decorator is a decorator that wraps the say_hello function. when say_hello is called, it actually invokes wrapper, allowing you to execute code before and after the original function call.
question: explain the difference between a generator function and a regular function.
answer:
in the example, square_numbers is a regular function that returns a list, while square_numbers_generator is a generator function using the yield keyword. the generator function produces values one at a time, which can be more memory-efficient when dealing with large datasets.
question: what is a context manager in python, and how do you implement it?
answer:
in the example, the built-in open function is used as a context manager with the with statement. additionally, a custom context manager (mycontextmanager) is implemented using the _enter_ and _exit_ methods, providing control over setup and teardown operations.
by mastering these python interview questions and understanding the associated code examples, you'll be well-equipped to showcase your expertise in interviews. remember to not just memorize solutions but also understand the underlying concepts to demonstrate a deep understanding of python. good luck!
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