сделано ДЗ "алгоритмы обратки данных"
This commit is contained in:
Dmitry Medvedev
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{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "815ff7f8",
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"metadata": {},
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"source": [
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"Задача 1. Сумма оплаченных заказов\n",
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"Дан список заказов:\n",
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"\n",
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"orders= [\n",
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" {\"order_id\":1,\"amount\":1200,\"status\":\"paid\"},\n",
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" {\"order_id\":2,\"amount\":500,\"status\":\"new\"},\n",
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" {\"order_id\":3,\"amount\":800,\"status\":\"paid\"},\n",
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" {\"order_id\":4,\"amount\":300,\"status\":\"cancelled\"}\n",
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"]\n",
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"Нужно:\n",
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" пройтись по заказам;\n",
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" взять только те, у которых статус \"paid\";\n",
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" посчитать их общую сумму;\n",
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" вывести результат."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 31,
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"id": "5dac0cd0",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"2\n"
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]
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}
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],
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"source": [
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"orders= [\n",
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" {\"order_id\":1,\"amount\":1200,\"status\":\"paid\"},\n",
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" {\"order_id\":2,\"amount\":500,\"status\":\"new\"},\n",
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" {\"order_id\":3,\"amount\":800,\"status\":\"paid\"},\n",
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" {\"order_id\":4,\"amount\":300,\"status\":\"cancelled\"}\n",
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"]\n",
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"count = 0\n",
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"for order in orders:\n",
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" if order[\"status\"] == \"paid\":\n",
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" count += 1\n",
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"print(count)\n"
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]
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},
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{
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"cell_type": "markdown",
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"id": "5909293c",
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"metadata": {},
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"source": [
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"Задача 2. Поиск самого дорогого заказа\n",
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"Дан список заказов:\n",
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"\n",
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"orders= [\n",
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" {\"order_id\":1,\"amount\":1200},\n",
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" {\"order_id\":2,\"amount\":500},\n",
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" {\"order_id\":3,\"amount\":1800},\n",
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" {\"order_id\":4,\"amount\":900}\n",
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"]\n",
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"Нужно:\n",
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" найти заказ с максимальной суммой amount;\n",
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" вывести весь словарь этого заказа."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 37,
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"id": "1cd30f37",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"{'order_id': 3, 'amount': 1800}\n"
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]
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}
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],
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"source": [
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"orders = [\n",
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" {\"order_id\":1,\"amount\":1200},\n",
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" {\"order_id\":2,\"amount\":500},\n",
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" {\"order_id\":3,\"amount\":1800},\n",
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" {\"order_id\":4,\"amount\":900}\n",
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"]\n",
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"max_order = orders[0]\n",
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"for order in orders:\n",
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" if order[\"amount\"] > max_order[\"amount\"]:\n",
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" max_order = order\n",
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"pprint(max_order, sort_dicts=False)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "c81986e6",
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"metadata": {},
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"source": [
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"Задача 3. Группировка заказов по пользователю\n",
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"Дан список заказов:\n",
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"\n",
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"orders= [\n",
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" {\"order_id\":1,\"user_id\":101,\"amount\":1200},\n",
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" {\"order_id\":2,\"user_id\":102,\"amount\":500},\n",
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" {\"order_id\":3,\"user_id\":101,\"amount\":800},\n",
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" {\"order_id\":4,\"user_id\":103,\"amount\":700}\n",
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"]\n",
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"Нужно:\n",
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" сгруппировать заказы по user_id;\n",
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" в результате получить словарь, где:\n",
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" ключ — это user_id,\n",
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" значение — список заказов этого пользователя."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 46,
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"id": "cd85b1b0",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"{101: [{'order_id': 1, 'user_id': 101, 'amount': 1200},\n",
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" {'order_id': 3, 'user_id': 101, 'amount': 800}],\n",
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" 102: [{'order_id': 2, 'user_id': 102, 'amount': 500}],\n",
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" 103: [{'order_id': 4, 'user_id': 103, 'amount': 700}]}\n"
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]
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}
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],
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"source": [
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"orders= [\n",
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" {\"order_id\":1,\"user_id\":101,\"amount\":1200},\n",
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" {\"order_id\":2,\"user_id\":102,\"amount\":500},\n",
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" {\"order_id\":3,\"user_id\":101,\"amount\":800},\n",
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" {\"order_id\":4,\"user_id\":103,\"amount\":700}\n",
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"]\n",
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"grouped = {}\n",
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"for order in orders:\n",
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" user_id = order[\"user_id\"]\n",
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" if user_id not in grouped:\n",
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" grouped[user_id] = []\n",
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" grouped[user_id].append(order)\n",
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"pprint(grouped, sort_dicts=False)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "a0669a7b",
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"metadata": {},
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"source": [
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"Задача 4. Подсчет выручки по пользователям\n",
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"Дан список заказов:\n",
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"\n",
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"orders= [\n",
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" {\"order_id\":1,\"user_id\":101,\"amount\":1200},\n",
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" {\"order_id\":2,\"user_id\":102,\"amount\":500},\n",
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" {\"order_id\":3,\"user_id\":101,\"amount\":800},\n",
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" {\"order_id\":4,\"user_id\":103,\"amount\":700},\n",
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" {\"order_id\":5,\"user_id\":102,\"amount\":300}\n",
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"]\n",
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"Нужно:\n",
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" пройтись по заказам;\n",
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" посчитать общую сумму amount по каждому user_id;\n",
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" сохранить результат в словарь."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 54,
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"id": "3f0a2d12",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"{101: 2000, 102: 800, 103: 700}\n"
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]
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}
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],
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"source": [
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"orders= [\n",
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" {\"order_id\":1,\"user_id\":101,\"amount\":1200},\n",
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" {\"order_id\":2,\"user_id\":102,\"amount\":500},\n",
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" {\"order_id\":3,\"user_id\":101,\"amount\":800},\n",
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" {\"order_id\":4,\"user_id\":103,\"amount\":700},\n",
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" {\"order_id\":5,\"user_id\":102,\"amount\":300}\n",
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"]\n",
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"user_total = {}\n",
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"for order in orders:\n",
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" user_id = order[\"user_id\"]\n",
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" if user_id not in user_total:\n",
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" user_total[user_id] = 0\n",
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" user_total[user_id] += order[\"amount\"]\n",
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"print(user_total)"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.13.7"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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