Все буквенно -цифровые символы для Python Python
alpha_numeric = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
Delightful Dogfish
alpha_numeric = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
def isalphanumeric(char):
return(ord('A') <= ord(char) <= ord('Z') or
ord('a') <= ord(char) <= ord('z') or
ord('0') <= ord(char) <= ord('9'))