Describing a While code

Question

Would you describe the code, specially commented part ?

https://code.sololearn.com/cuFz6oZNby4q/?ref=app

Answer 1

'''This part sets a list and a counter variable'''

words = ["hello", "world", "spam", "eggs"]
counter = 0

'''This part sets another variable to the length of the
list. -1 because lists start at 0'''

max_index = len(words) - 1

'''This is a while loop that runs until the counter is
larger than the length of the list.
Each run of it, it prints the next word from the list'''

while counter <= max_index:
word = words[counter]
print(word + "!")
counter = counter + 1