Зміст курсу

Python Functions: From Zero to Hero

1. What is a Function?

What is a Function? Challenge: Create a More Complex Function Challenge: Create a Function 'exam_scores' with if-else Statement Challenge: Calculate the Ellipse Area Print vs Return

2. Arguments or Parameters

Arguments or Parameters Challenge 1 Challenge 2

3. Assigning a Default Value to a Parameter

Default Parameters Challenge 1 Challenge 2

4. An Unknown Number of Arguments

Unknown Number of Arguments *args **kwargs

5. Functions within Functions

Functions within Functions Challenge

6. Recursion

Challenge Recursion

Default Parameters

Let's return to our function, which calculates the cost of our grocery cart. That is, we have the following function:


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(10, 7, 12)

Suppose that in most stores, the price of oranges is the same (for example, 10 conventional units). Python allows you to set this price for oranges as the default value, which will be the same for all cases.

Let's look at the implementation of this


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges=10):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

Now take a close look at the function call, in the code that is shown above. As you can see, we can now skip the third argument in the function call and just write the values of the first two arguments.

And oddly enough, our function will work correctly, since all the necessary data for calculating the total cost of a grocery basket is there.

Parameters without default values must be before parameters with default values.

In our example function, price_of_oranges = 10 should come after price_of_apples and after price_of_carrots. If we first write a parameter with a default value and then a parameter without a default value we will get: SyntaxError: non-default argument follows default argument. As in the example below:


              1234
            
def grocery_cart(price_of_oranges=10, price_of_apples, price_of_carrots):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

Завдання

You have to implement a function named function(), which has three parameters: name, platform and age with a default value of age = 16. This function should display the following text: hello, my name is Max. I am 16 years old. I love Codefinity. Please, use f-strings to display the result.

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 3. Розділ 1

Default Parameters

Let's return to our function, which calculates the cost of our grocery cart. That is, we have the following function:


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(10, 7, 12)

Let's look at the implementation of this


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges=10):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

And oddly enough, our function will work correctly, since all the necessary data for calculating the total cost of a grocery basket is there.

Parameters without default values must be before parameters with default values.


              1234
            
def grocery_cart(price_of_oranges=10, price_of_apples, price_of_carrots):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

Завдання

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 3. Розділ 1

Default Parameters

Let's return to our function, which calculates the cost of our grocery cart. That is, we have the following function:


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(10, 7, 12)

Let's look at the implementation of this


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges=10):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

And oddly enough, our function will work correctly, since all the necessary data for calculating the total cost of a grocery basket is there.

Parameters without default values must be before parameters with default values.


              1234
            
def grocery_cart(price_of_oranges=10, price_of_apples, price_of_carrots):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

Завдання

Все було зрозуміло?

Дякуємо за ваш відгук!

Let's return to our function, which calculates the cost of our grocery cart. That is, we have the following function:


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(10, 7, 12)

Let's look at the implementation of this


              1234
            
def grocery_cart(price_of_apples, price_of_carrots, price_of_oranges=10):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

And oddly enough, our function will work correctly, since all the necessary data for calculating the total cost of a grocery basket is there.

Parameters without default values must be before parameters with default values.


              1234
            
def grocery_cart(price_of_oranges=10, price_of_apples, price_of_carrots):
    total_price = price_of_apples +price_of_carrots + price_of_oranges
    print(total_price)
grocery_cart(price_of_apples = 11, price_of_carrots = 7)

Завдання

Секція 3. Розділ 1