What data types are available in Python?
Intern
155
Python
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584
What are ACID requirements? Briefly comment on each property.
Middle+
69
What is the difference between CMD and ENTRYPOINT in Dockerfile?
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56
How have you used dunder methods in your work and for which implementations have they been useful?
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54
What are the advantages of ORM compared to raw SQL?
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53
What is data normalization and what is it used for?
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53
How can GIL limitations be bypassed and subsequent requests not blocked when executing one?
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52
What is a lambda function, why is it convenient, and where is it used?
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52
What are the normal forms and what do they solve?
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50
What is the difference between WHERE and HAVING operators?
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49
What is GIL, what are its advantages, disadvantages, and the inconveniences it creates?
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47
How to prevent shared resource usage by threads so that resources are isolated for each instance?
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46
What mechanism in the database prevents duplicate creation during concurrent requests with the same idempotency key?
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46
What are the differences between PostgreSQL, MongoDB, and ClickHouse, and when should each be chosen?
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46
What happens if two requests with the same idempotency key arrive simultaneously from different threads or processes?
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42
How was your CI pipeline structured: what stages and jobs did it consist of?
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40
class PayoutService: def __init__(self): # ... pass def create_payout(self, idempotency_key: str, terminal_id: int, amount: float) -> dict: """ Should return a dictionary of the form: {"payout_id": <int>, "terminal_id": <int>, "amount": <float>, "status": "success"} Guarantees: - on first call with a new idempotency_key — a new payout is created - on subsequent calls with an already used idempotency_key — the result of the first call is returned, a new payout is NOT created - amount must be > 0, otherwise — raise ValueError """ raise NotImplementedError
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39
In which cases would you consciously refuse ORM in favor of raw SQL queries?
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38
How are microservices divided by responsibility and according to what rule?
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37
What is a generator, how does it work, what is its optimality, and how to distinguish it in code?
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36