password check

print('Insert password')
s = input()

if len(s) < 8:
    print('Password length < 8')
    exit(1)

count_letter = 0
count_number = 0
count_special = 0

for i in range(len(s)):
    if s[i] >= '0' and s[i] <= '9':
        count_number += 1
    if (s[i] >= 'a' and s[i] <= 'z') or (s[i] >= 'A' and s[i] <= 'Z'):
        count_letter += 1
    if s[i] == '@' or s[i] == '%' or s[i] == '#':
        count_special += 1

if count_number < 1 or count_special < 1 or count_letter < 1:
    print('Invalid password')
    exit(1)

print('Good password!')