Name
maketrans
Synopsis
maketrans(from
,onto
)
Returns a translation table, which is a plain string of length 256
that provides a mapping from characters in ascending ASCII order to
another set of characters. from
and
onto
must be plain strings, with
len(
from
)
equal to
len(
onto
)
.
Each character in string from
is mapped to
the character at the corresponding position in string
onto
. For each character not listed in
from
, the translation table maps the
character to itself. To get an identity table that maps each
character to itself, call maketrans('','')
.
With the translate
string method, you can delete
characters as well as translate them. When you use
translate
just to delete characters, the first
argument you pass to translate should be the identity table.
Here’s an example of using the
maketrans
function and the string method
translate
to delete vowels:
import string identity = string.maketrans('','') print 'some string'.translate(identity,'aeiou') # prints: sm strng
Here are examples of turning all other vowels into a’s and also deleting s’s:
intoas = string.maketrans('eiou','aaaa') print 'some string'.translate(intoas) # prints: sama strang print 'some string'.translate(intoas,'s') # prints: ama trang
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