Проверка пароля

password = input("Enter your password: ")
if len(password) >= 8 and any(char.isdigit() for char in password) and any(char.isupper() for char in password) and any(char.islower() for char in password):  # pep8 sasat
    print("Безопасный")
else:
    print("Не безопасный")

and (password.isalnum() is False)

not password.isalnum()

from string import ascii_lowercase, digits, punctuation
 
 
def password_chacker(paswd):
    if len(paswd) < 8: return "не безопасный"
    CORRECT_SET = set(ascii_lowercase + ascii_lowercase.upper() + digits + punctuation)
    return "безопасный" if set(paswd).issubset(CORRECT_SET) else "не безопасный"
 
 
print(password_chacker('sa256A['))
print(password_chacker('Qsa256A['))

print(password_chacker('aaaaaaaaaaa'))

from string import ascii_lowercase as aw, ascii_uppercase as au, digits as di, punctuation as pu
 
 
def check(psw):
    return len(psw) > 7 and all(set(psw) & set(x) for x in [aw, au, di, pu])
 
 
print(check('123'))
print(check('123a'))
print(check('123aA'))
print(check('123a*'))
print(check('3A%'))
print(check('12sahdkjshakdj3A%'))
print(check('12sahdkjshakdj3A'))
print(check('12sahdkjshakdj3%'))
print(check('sahdkjshakdjA%'))