In what cases is the execution of the code block inside the else branch performed in a conditional operator?

The code block inside the else branch in a conditional statement executes when the condition in the if evaluates to False.

Example:

x = 10
if x > 20:
    print("x is greater than 20")
else:
    print("x is not greater than 20")  # This code will execute because the condition is false

That is, if the if condition is not met, control passes to the else block.