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Exercise 4

Use a while loop to print all numbers in my_list with even values, one number per line. Then, print the odd numbers using a ' for' loop.

my_list = [6, 3, 0, 11, 20, 4, 17]

6
0
20
4

3
11
17

Solution

my_list = [6, 3, 0, 11, 20, 4, 17]

index = 0
while index < len(my_list):
    number = my_list[index]
    # Even numbers are exactly divisible by 2
    if number % 2 == 0:
        print(number)

    index += 1

my_list = [6, 3, 0, 11, 20, 4, 17]

for number in my_list:
    # Odd numbers are not exactly divisible by 2
    if number % 2 != 0:
        print(number)

Our solutions both rely on using the % operator to determine whether a number is exactly divisible by 2. Even numbers are; odd numbers aren't. In both cases, we only need to compare the result of element % 2 with 0. If number % 2 is 0, the number is even. Otherwise, it is odd.

As with the previous problem, we needed indexing to control the while loop. However, the for loop led to code that is easier to read.

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