Modulo (%)
The modulo operator gives the remainder after division:
print(30 % 6) # 0
print(30 % 7) # 2Using variables is just as simple:
num1 = 33
num2 = 4
print("The remainder is", num1 % num2) # The remainder is 1A classic use is checking even/odd (remainder when divided by 2):
num = int(input("Enter a number: "))
if num % 2 == 0:
print(num, "is even.")
else:
print(num, "is odd.")Modulo Task 1 – Remainder /5
Ask for a whole number and print the remainder when divided by 5:
number = int(input("Enter a number: "))
print("The remainder when divided by 5 is", number % 5)Modulo Task 2 – Rollercoaster
A rollercoaster only allows groups of 4. Check if a group size divides evenly into 4:
group = int(input("How many in your group? "))
if group % 4 == 0:
print("Perfect groups of four!")
else:
print("You will be split up!")Integer Division (//)
Integer division discards any fractional part:
print(20 / 3) # Regular division: 6.666666666666667
print(20 // 3) # Integer division: 6Integer Division Task 1 – Divide by 5
Read a number and show how many whole times 5 fits in it (with clear wording):
num = int(input("Enter a number: "))
result = num // 5
print("5 goes into", num, "exactly", result, "whole times.")Integer Division Task 2 – Plane Rows
A plane has 6 seats per row. How many full rows are filled?
passengers = int(input("How many passengers are there in total? "))
rows = passengers // 6
print("There will be", rows, "full rows on the plane.")Exponentiation (**)
Exponentiation raises a number to a power:
print(4 ** 4) # 256With variables:
base = 5
exponent = 4
print(base ** exponent) # 625Exponent Task 1 – Square a Number
Ask for a number and print its square:
number = int(input("Enter a number: "))
print(number, "squared is", number ** 2)Exponent Task 2 – Custom Exponent
Ask for a base and exponent, then show the result nicely formatted:
base = int(input("Enter the base: "))
exp = int(input("Enter the exponent: "))
result = base ** exp
print(base, "to the power of", exp, "is", result)