Why loop over a string's characters directly instead of its indices — and how does `in` collapse a long chain of `or` checks into one line?
Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.
word is given. Loop over its characters and count how many are vowels, treating the vowels as the letters in 'aeiou'. Assign the total to vowel_count.
Hint: the in keyword tests whether a character is one of a group of characters.