There is an older module named string.
Almost all of the functions in this module are directly available as
methods of the string type. The one remaining
function of value is the maketrans function, which
creates a translation table to be used by the
translate method of a
string. Beyond that, there are a number of public
module variables which define various subsets of the ASCII
characters.
-
maketrans(
from
,
to
) → string
-
Return a translation table (a string
256 characters long) suitable for use in
string.translate. The
strings
from
and
to
must be of the same length.
The following example shows how to make and then apply a
translation table.
>>>
from string import maketrans
>>>
t= maketable("aeiou","xxxxx")
>>>
phrase= "now is the time for all good men to come to the aid of their party"
>>>
phrase.translate(t)
'nxw xs thx txmx fxr xll gxxd mxn tx cxmx tx thx xxd xf thxxr pxrty'
More importantly, this module contains a number of definitions of
the characters in the ASCII character set. These definitions serve as a
central, formal repository for facts about the character set. Note that
there are general definitions, applicable to Unicode character setts,
different from the ASCII definitions.
-
ascii_letters
-
The set of all letters, essentially a union of
ascii_lowercase and
ascii_uppercase.
-
ascii_lowercase
-
The lowercase letters in the ASCII character set:
'abcdefghijklmnopqrstuvwxyz'
-
ascii_uppercase
-
The uppercase letters in the ASCII character set:
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
-
digits
-
The digits used to make decimal numbers:
'0123456789'
-
hexdigits
-
The digits used to make hexadecimal numbers:
'0123456789abcdefABCDEF'
-
letters
-
This is the set of all letters, a union of
lowercase and uppercase,
which depends on the setting of the locale on your system.
-
lowercase
-
This is the set of lowercase letters, and depends on the
setting of the locale on your system.
-
octdigits
-
The digits used to make octal numbers:
'01234567'
-
printable
-
All printable characters in the character set. This is a
union of digits, letters, punctuation and whitespace.
-
punctuation
-
All punctuation in the ASCII character set, this is
'!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
-
uppercase
-
This is the set of uppercase letters, and depends on the
setting of the locale on your system.
-
whitespace
-
A collection of characters that cause spacing to happen. For
ASCII this is '\t\n\x0b\x0c\r '
