Exercise 31

Write a Python program that retrieves the list of even integers and the list of odd integers from a list of numbers.


def even_odd_lists(numbers):
    even_list = []
    odd_list = []
    for num in numbers:
        if num % 2 == 0:
    return even_list, odd_list

# Here's an example usage of the function:
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9]
even_nums, odd_nums = even_odd_lists(numbers)
print("Even numbers:", even_nums)
print("Odd numbers:", odd_nums)

Even numbers: [2, 4, 6, 8]
Odd numbers: [1, 3, 5, 7, 9]


  1. This function takes a list ‘numbers’ as input: and returns two separate lists – one containing even integers, and the other containing odd integers.
  2. We initialize the two lists: even_list = [] and odd_list = []
  3. We then iterate over all elements of the list numbers: and we check if the element is even, we then add it to the eventilist, else we add it to the odd_list!
  4. In this example: the input list contains integers from 1 to 9, and the output shows the even numbers in one list and the odd numbers in another list.


Younes Derfoufi

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