Зміст курсу

Посібник з циклів Python

1. Цикл For

Перший Цикл For Ітерація з Функцією Range()Виклик: Дослідження Кроків і Зворотного Порядку з Range()Оператори If/Else у Циклі For Підрахунок за Допомогою Циклів Оператори Керування Циклами Оператор Else у Циклі For Функція Enumerate()

2. Цикл While

Перше While Цикл Нескінченний Цикл Використання Умовних Операторів у Циклі While Оператори Керування Циклом у Циклі While Оператор Else у Циклі While Вибір Між Циклами For та While у Python

3. Вкладені Цикли

Вкладений Цикл For Вкладений While Цикл If/Else у Вкладеному Циклі Break/Continue у Вкладеному Циклі

4. List and Dictionary Comprehensions

Генератор Списків List Comprehansions with Conditions Генератор Словників Dictionary Comprehension with Condition

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 4. Розділ 2

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 4. Розділ 2

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 4. Розділ 2