Enough with just some simple IFs and ELSEs. Let's now have some ANDs, ORs, and NOTs in our code.
Logical Operators are used to perform logical operations on Boolean values: True and False. It connects two or more logical expressions to create a compound and more complex conditions.
In Python, you can perform logical operations using the following keywords:
- and - to perform logical AND operation
- or - to perform logical OR operation
- not - to perform logical NOT operation
It uses self-explanatory words to express their functions. No more further simplifications, it just doesn't get simpler than this.
For the expression to be True, the two logical expressions should both be True.
num1 = 5
num2 = 12
if (num1 % 2 == 0) and (num2 % 2 == 0):
print("Both numbers are even.")
else:
print("At least one of the numbers isn't an even number.")Since num1 is not an even number, the code should print out what's inside the else statement.
For the expression to be True, at least one logical expression must be True.
age = 33
is_member = True
discount = 15
if (age < 18 or is_member):
print(f"You are eligible for a {discount}% discount!")
else:
print("Sorry, you do not qualify for a discount.")In the provided code snippet above, individuals under the age of 18 or those who are current members are qualified for a discount.
Using not will invert the truth value of a logical expression. If it is True, then it returns False, else if it's False, then it returns True.
gwa = 2.01
if not gwa > 2.00:
print("Congratulations! You qualify for a Dean's Lister award!")
else:
print("Sorry, your current GWA falls below the minimum grade requirement.")The logical expression inside the if statement states that if the gwa is not higher than 2.0, then you qualify for the award.
Create your own simple rock-paper-scissor console game! Use logical operators to finish this challenge.
A sample output for this challenge may look like this:
Player1: Rock
Player2: Scissors
Player1 Wins!