Módulo de cadena en Python
import string
# string module constants
print(string.ascii_letters)
print(string.ascii_lowercase)
print(string.ascii_uppercase)
print(string.digits)
print(string.hexdigits)
print(string.whitespace) # ' \t\n\r\x0b\x0c'
print(string.punctuation)
Charming Caterpillar