🎯 Задание: Найти 3 самых популярных товара по количеству покупок (не по числу пользователей, а по общему количеству упоминаний).
✅ Ожидаемый результат:
[('banana', 4), ('apple', 4), ('orange', 2)]
💡 Решение:
from collections import Counter
# Собираем все товары в один список all_items = [] for order in orders: all_items.extend(order["items"])
# Считаем количество каждого товара item_counts = Counter(all_items)
# Получаем топ-3 самых популярных top_3 = item_counts.most_common(3)
print(top_3)
📌 Что тренирует задача:
• Работа со словарями и списками • Использование Counter из модуля collections • Умение работать с вложенными структурами • Сортировка по частоте с помощью most_common()
🎯 Задание: Найти 3 самых популярных товара по количеству покупок (не по числу пользователей, а по общему количеству упоминаний).
✅ Ожидаемый результат:
[('banana', 4), ('apple', 4), ('orange', 2)]
💡 Решение:
from collections import Counter
# Собираем все товары в один список all_items = [] for order in orders: all_items.extend(order["items"])
# Считаем количество каждого товара item_counts = Counter(all_items)
# Получаем топ-3 самых популярных top_3 = item_counts.most_common(3)
print(top_3)
📌 Что тренирует задача:
• Работа со словарями и списками • Использование Counter из модуля collections • Умение работать с вложенными структурами • Сортировка по частоте с помощью most_common()
A project of our size needs at least a few hundred million dollars per year to keep going,” Mr. Durov wrote in his public channel on Telegram late last year. “While doing that, we will remain independent and stay true to our values, redefining how a tech company should operate.
Should I buy bitcoin?
“To the extent it is used I fear it’s often for illicit finance. It’s an extremely inefficient way of conducting transactions, and the amount of energy that’s consumed in processing those transactions is staggering,” the former Fed chairwoman said. Yellen’s comments have been cited as a reason for bitcoin’s recent losses. However, Yellen’s assessment of bitcoin as a inefficient medium of exchange is an important point and one that has already been raised in the past by bitcoin bulls. Using a volatile asset in exchange for goods and services makes little sense if the asset can tumble 10% in a day, or surge 80% over the course of a two months as bitcoin has done in 2021, critics argue. To put a finer point on it, over the past 12 months bitcoin has registered 8 corrections, defined as a decline from a recent peak of at least 10% but not more than 20%, and two bear markets, which are defined as falls of 20% or more, according to Dow Jones Market Data.