Programmeren/les 4/4-6.py

#!/usr/bin/env python3
#title          :4-6.py
#description    :Opdracht 4.6 - For, If & vowels
#author         :Marcel Haazen
#email          :marcel@haazen.xyz
#date           :21-09-2019 - 23:33
#version        :0.1
#usage          :python3 4-6.py
#notes          :
#python_version :3.7.4
#==============================================================================
s = "Guido van Rossum heeft programmeertaal Python bedacht."
vowels  = "aeiou"
for letter in s:
    if letter in vowels:
        print(letter)