Зміст курсу

Introduction to Python Video Course

1. Getting Started

First Steps Comments Simple Math Operations Grocery Calculation Capstone Recap

2. Variables and Types

Data Types Storing Data in Variables Variable Naming Rules Using Variables String Indexing and Length String Slicing and Concatenation Inventory Sorting Capstone Challenge Recap

3. Conditional Statements

Boolean Data Type Combining Conditions Challenge Membership Operators and Type Comparisons Conditional Expressions Capstone Challenge Recap

4. Other Data Types

Lists and List Methods Nested Lists Challenge Tuples and Tuple Methods Tuple Operations Challenge Dictionaries and Dictionary Methods Capstone Challenge Recap

5. Loops

For Loops While Loops Range Function Iterating Over Indexes Challenge Nested Loops Capstone Challenge Challenge Recap

6. Functions

Built-in Functions User Defined Functions Challenge Functions with no `return`Modifying Functions Capstone Challenge Recap

Boolean Data Type

In this chapter, we'll dive into the Boolean data type. Booleans are simple yet powerful, they allow us to handle True or False values, enabling our programs to react to different situations effectively. In the context of managing a grocery store, Booleans can help us determine whether certain conditions are met, such as whether an item is in stock or if a sale is active.

Watch as Alex uses Boolean data types to compare prices and names:

Understanding Boolean Data Types

A boolean data type has only two possible values: True and False. These values are often the result of comparison operations and are fundamental in controlling the flow of our programs. By understanding booleans, you'll be able to write code that can make decisions based on various conditions.

The following operations are common comparison operators that result in boolean values:

Equal to: ==;
Not equal to: !=;
Greater than: >;
Less than: <;
Greater than or equal to: >=;
Less than or equal to: <=.

Example Application

Let's check if an item (milk) is low in stock by comparing its quantity to a predefined threshold for low stock:


              123456789
            
# Define the quantity of the item and the low stock threshold
milk_quantity = 12
low_stock_threshold = 10

# Check if the item quantity is below the low stock threshold
low_stock = milk_quantity <= low_stock_threshold

# Print the result
print("Is the item low in stock?", low_stock)

Now it's your turn to practice using booleans. In this challenge, you will check if the total cost of a purchase is eligible for a discount.

Завдання

Define a variable for the total cost of a grocery bill and assign it the value 25.00. Create a boolean variable that checks if the total cost is greater than or equal to 20.00 to determine discount eligibility. Print the value of your discount eligibility variable.

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

Завдання

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

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

Все було зрозуміло?

Секція 3. Розділ 1

Boolean Data Type

Watch as Alex uses Boolean data types to compare prices and names:

Understanding Boolean Data Types

The following operations are common comparison operators that result in boolean values:

Equal to: ==;
Not equal to: !=;
Greater than: >;
Less than: <;
Greater than or equal to: >=;
Less than or equal to: <=.

Example Application

Let's check if an item (milk) is low in stock by comparing its quantity to a predefined threshold for low stock:


              123456789
            
# Define the quantity of the item and the low stock threshold
milk_quantity = 12
low_stock_threshold = 10

# Check if the item quantity is below the low stock threshold
low_stock = milk_quantity <= low_stock_threshold

# Print the result
print("Is the item low in stock?", low_stock)

Now it's your turn to practice using booleans. In this challenge, you will check if the total cost of a purchase is eligible for a discount.

Завдання

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

Завдання

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

Все було зрозуміло?

Секція 3. Розділ 1

Boolean Data Type

Watch as Alex uses Boolean data types to compare prices and names:

Understanding Boolean Data Types

The following operations are common comparison operators that result in boolean values:

Equal to: ==;
Not equal to: !=;
Greater than: >;
Less than: <;
Greater than or equal to: >=;
Less than or equal to: <=.

Example Application

Let's check if an item (milk) is low in stock by comparing its quantity to a predefined threshold for low stock:


              123456789
            
# Define the quantity of the item and the low stock threshold
milk_quantity = 12
low_stock_threshold = 10

# Check if the item quantity is below the low stock threshold
low_stock = milk_quantity <= low_stock_threshold

# Print the result
print("Is the item low in stock?", low_stock)

Now it's your turn to practice using booleans. In this challenge, you will check if the total cost of a purchase is eligible for a discount.

Завдання

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

Завдання

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

Все було зрозуміло?

Watch as Alex uses Boolean data types to compare prices and names:

Understanding Boolean Data Types

The following operations are common comparison operators that result in boolean values:

Equal to: ==;
Not equal to: !=;
Greater than: >;
Less than: <;
Greater than or equal to: >=;
Less than or equal to: <=.

Example Application

Let's check if an item (milk) is low in stock by comparing its quantity to a predefined threshold for low stock:


              123456789
            
# Define the quantity of the item and the low stock threshold
milk_quantity = 12
low_stock_threshold = 10

# Check if the item quantity is below the low stock threshold
low_stock = milk_quantity <= low_stock_threshold

# Print the result
print("Is the item low in stock?", low_stock)

Now it's your turn to practice using booleans. In this challenge, you will check if the total cost of a purchase is eligible for a discount.

Завдання

Define a variable to hold the total cost of a grocery bill, which is given as 25.00.
Create the boolean variable discountEligible by comparing your total cost variable to the discount threshold of 20.00 using the appropriate comparison operator. If the total cost is greater than or equal to the discount threshold, the purchase is eligible for a discount.
Print whether the purchase is eligible for a discount (True or False).

Секція 3. Розділ 1