Question

Define a function num_letters(...) that evaluates a string consisting of numbers, letters, and symbols that returns the total number of letters of the alphabet (upper and lowercase) in the string. If there are no letters in the function, then it should return the message "no way".

As an example, the following code fragment:

st1="aihj{234][o" print (num_letters(st1))

should produce the output:

5

Answer 1

def num_letters(s):
    count = 0
    for ch in s:
        if ch.isalpha():
            count += 1
    if count == 0:
        return "no way"
    else:
        return count


st1 = "aihj{234][o"
print(num_letters(st1))