OZON

Explain what slices are in Python programming.

What result will the console output in example №15

How is the Equals method implemented when working with dictionaries and how does it affect data handling?

Can you explain what the term 'fixture' means in testing?

How to find the maximum integer in a string without using regular expressions in Python?

Do you have practical experience using Jetpack Compose in projects?

Why does the same website successfully load on one computer using the same subnet, but on another, a message about starting Nginx appears?

How to deploy Kubernetes using Ansible?

How is the insertion operation's time complexity evaluated in a TreeMap data structure?

Are you currently engaged in any professional activity or projects?

Tell about the Promise methods: Promise.all, Promise.allSettled, Promise.race, Promise.any — how do they differ from each other?

Optimization and reorganization of React components

Condition There is a database with the following data schema // user id | firstname | lastname | birth 1 | Ivan | Petrov | [phone] | Anna | Petrova | [phone] | Anna | Petrova | [phone] // purchase sku | price | user_id | date 1 | 5500 | 1 | [phone] | 5700 | 1 | [phone] | 4000 | 1 | [phone] | 8000 | 2 | [phone] | 400 | 2 | [phone] // ban_list user_id | date_from 1 | [phone] You need to output: 1. Display unique combinations of user and product id for all purchases made by users before they were banned. Sort first by user name, then by SKU. 2. Find users who made purchases totaling more than 5000 rubles. Display their id, name, surname, and total purchase amount in the format id | name | surname | total amount.

How to analyze the causes of churn?

What is Scrum of Scrums?