Python

What is the purpose of the gather function in the asyncio module in Python?

What are the advantages and disadvantages of using indexes in databases?

How do unit, module, and integration testing differ from each other?

Junior — Middle

Arendadata

What steps are necessary to update a microservice without interrupting other system components?

Have you had experience using asynchronous input/output in your projects?

Describe your experience working in team projects and the role you played there.

Junior — Middle

Циан

How is a unique trace identifier used for process tracking and analysis in a system?

How to make 10 requests to an external API in parallel and return the result?

Middle

СБЕР

Have you studied basic algorithmic methods and data structures?

Can you explain how the WebSocket protocol works and how it differs from regular HTTP requests?

How to manage dependencies and their versions when working with pip for Python projects?

Condition: Given two arrays of objects. Each object contains a numeric field 'code'. Return a new array containing all objects from array a for which there exists an object in array b with the same 'code' value. The order of elements in the result is determined by the order of the corresponding 'code' in array b: objects from a should be arranged in the order in which their 'code' appears in b. If multiple objects with the same 'code' appear in b, only the first occurrence is considered. Input data: - a — array of objects of the form { code: number, ...rest }, length from 0 to 10^5 - b — array of objects of the form { code: number, ...rest }, length from 0 to 10^5 Output data: Array of objects from a, filtered and ordered by the first occurrence of the corresponding 'code' in b. Constraints: - 0 <= a.length, b.length <= 100 000 - The 'code' field is a non-negative integer - b may contain duplicate 'code' values — only the first occurrence is considered Example function: ```python # Available without import: json, sys, io def intersect_by_code(a, b): # Write solution here return [] ```

How is the connection to a PostgreSQL database established?

Have you participated in remote work or performed tasks outside the office?

What was the maximum size of data you ever stored or processed in your practice?

Junior — Middle

Яндекс

Explain what S3 storage is and how it is used in cloud solutions.

Do you believe that encapsulation implies a strict separation between public contracts and internal implementations related to data management?

What reasons might prevent the use of PyCharm in your work?

How does task switching occur in coroutines when using asyncio?

Junior — Middle

СБЕР Центр ИИ

How to distinguish and choose between the Poetry tool and the pip package manager for managing dependencies in Python?