ascii_lowercase = ‘abcdefghijklmnopqrstuvwxyz‘
ascii_uppercase = ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ‘digits = ‘0123456789‘
hexdigits = ‘0123456789abcdefABCDEF‘letters = ‘abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ‘
lowercase = ‘abcdefghijklmnopqrstuvwxyz‘octdigits = ‘01234567‘
printable = ‘0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\‘()*+,-./:;<=>?@[\\]^_`{|}~ \t\n\r\x0b\x0c‘
punctuation = ‘!"#$%&\‘()*+,-./:;<=>?@[\\]^_`{|}~‘
uppercase = ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ‘
whitespace = ‘\t\n\x0b\x0c\r ‘
使用方式:string.ascii_letters