String
Constants
- ascii_letters
The concatenation of the ascii_lowercase and ascii_uppercase constants
- ascii_lowercase
The lowercase letters ‘abcdefghijklmnopqrstuvwxyz’.
- ascii_uppercase
The uppercase letters ‘ABCDEFGHIJKLMNOPQRSTUVWXYZ’.
- digits
The string ‘0123456789’.
- hexdigits
The string ‘0123456789abcdefABCDEF’.
- octdigits
The string ‘01234567’.
- printable
String of ASCII characters which are considered printable. This is a combination of the ascii_letters, digits, punctuation and whitespace constants.
- punctuation
String of ASCII characters which are considered punctuation characters in the C locale. !”#$%&’()*+,-./:;<=>?@[]^_`{|}~
- whitespace
The whitespace characters ‘ \t\n\r\v\f’.