Зміст курсу

Структури Даних в Python

1. Список

Створення Списку Індексація Списків Вкладений Список Довжина Списку Редагування Списків Метод append()Метод insert()Видалення Елементів Вилучення Елементів Генератор Списків List Comprehansions with Conditions

2. Словник

Створення Словника Вилучення Інформації Accessing Dictionary Keys Додавання Eлементів Челендж Видалення зі Словника Метод pop()Метод popitem()Метод clear()Генератор Словників Dictionary Comprehension with Condition

3. Кортеж

Створення Кортежу Доступ до Елементів Кортежу Об'єднання Кортежів Операції Видалення Редагування Кортежу Додавання Елементів Челендж Finding Elements in a Tuple

4. Множина

Створення Множини Метод add()Метод update()Доступ до Елементів Множини Методи remove() та discard()Метод clear()

List Comprehansions with Conditions

You can also use conditions:

For example, suppose you want to create a list of cities located in Japan.


              1234567891011121314
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = []
for city in travel_wishlist:
    if city[1] == "Japan":
        japanese_cities.append(city[0])

print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Which is equivalent to:


              12345678910
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = [city[0] for city in travel_wishlist if city[1] == "Japan"]
print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Завдання

Swipe to show code editor

Create a new list that contains the names of the cities from your travel_wishlist, but only if the estimated cost is less than $2500. Use a list comprehension.

Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантів

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 1. Розділ 11

List Comprehansions with Conditions

You can also use conditions:

For example, suppose you want to create a list of cities located in Japan.


              1234567891011121314
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = []
for city in travel_wishlist:
    if city[1] == "Japan":
        japanese_cities.append(city[0])

print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Which is equivalent to:


              12345678910
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = [city[0] for city in travel_wishlist if city[1] == "Japan"]
print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Завдання

Swipe to show code editor

Create a new list that contains the names of the cities from your travel_wishlist, but only if the estimated cost is less than $2500. Use a list comprehension.

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 1. Розділ 11

List Comprehansions with Conditions

You can also use conditions:

For example, suppose you want to create a list of cities located in Japan.


              1234567891011121314
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = []
for city in travel_wishlist:
    if city[1] == "Japan":
        japanese_cities.append(city[0])

print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Which is equivalent to:


              12345678910
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = [city[0] for city in travel_wishlist if city[1] == "Japan"]
print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Завдання

Swipe to show code editor

Create a new list that contains the names of the cities from your travel_wishlist, but only if the estimated cost is less than $2500. Use a list comprehension.

Все було зрозуміло?

Дякуємо за ваш відгук!

You can also use conditions:

For example, suppose you want to create a list of cities located in Japan.


              1234567891011121314
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = []
for city in travel_wishlist:
    if city[1] == "Japan":
        japanese_cities.append(city[0])

print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Which is equivalent to:


              12345678910
            
travel_wishlist = [
    ["Paris", "France", 2000],
    ["Tokyo", "Japan", 3000],
    ["New York", "USA", 2500],
    ["Kyoto", "Japan", 1500],
    ["Sydney", "Australia", 4000]
]

japanese_cities = [city[0] for city in travel_wishlist if city[1] == "Japan"]
print(japanese_cities)  # Output: ['Tokyo', 'Kyoto']

Завдання

Swipe to show code editor

Create a new list that contains the names of the cities from your travel_wishlist, but only if the estimated cost is less than $2500. Use a list comprehension.

Секція 1. Розділ 11