Find the longest word in the list

Write a python function that takes a list of words

and returns the length of the longest one.

def find_longest_word(L):
    word_len = []
    for n in L:
        word_len.append((len(n), n))
    word_len.sort()
    return word_len[-1][1]

# test
L = ["PHP", "Exercises", "Backend"]
print(find_longest_word(L))            # Exercises

See also

https://www.w3resource.com/python-exercises/string/python-data-type-string-exercise-8.php