What are Boolean values used for in Python?

Exploring Boolean Values in Python: Control Flow and Significance

Python uses Boolean values to represent truth values: True and False. They are essential for making logical decisions and controlling program flow. Boolean values serve as the basis for conditional statements and control flow structures. This allows us to perform different actions based on whether a condition is true or false.

Through control flow structures, we can understand the significance of Boolean values:

Conditional Statements:

• An if statement is a basic control flow structure that executes a block of code if a specified condition is satisfied (true).
• When the condition is false, the else statement will execute an alternative block of code.

Code:

age = 15
if age >= 18:
    print("You are an adult.")
else:
    print("You are not an adult.")

Output:

You are not an adult.

Chained Conditional Statements:

If you want to check multiple conditions in sequence, you can use multiple if, elif (else if), and else statements. In this way, we can make more complex decisions.

Example: Using chained if-elif-else

Code:

x = -20
if x > 0:
    print("x is positive.")
elif x == 0:
    print("x is zero.")
else:
    print("x is negative.")

Output:

x is negative.

Example using logical operators (and, or, not):

Logical operators allow us to combine multiple conditions to create more complex checks.

• The and operator returns True if both conditions are true.
• The or operator returns True if at least one condition is true.
• The not operator negates the condition result.

Code:

x = 7
y = -9
if x > 0 and y > 0:
    print("Both x and y are positive.")
if x > 0 or y > 0:
    print("At least one of x or y is positive.")
if not x < 0:
    print("x is not negative.")

Output:

At least one of x or y is positive.
x is not negative.