Remove no-printable characters in string

[Pascal]

Hello,

What's the best way to delete or replace no-printable characters in a string.
i.e.: "\x08toto\x00titi" -> "tototiti" or " toto titi"

 

[Paul Rubin]

What's the best way to delete or replace no-printable characters in a string.
i.e.: "\x08toto\x00titi" -> "tototiti" or " toto titi"

Fastest way is probably with the built-in string.translate operation.

 

[Roel Mathys]

Hello,

What's the best way to delete or replace no-printable characters in a string.
i.e.: "\x08toto\x00titi" -> "tototiti" or " toto titi"

import string
import sets
printable = sets.Set( string.printable )

s = "\x08toto\x00titi"
t = ''.join( [ i for i in s if i in printable or i.isalpha() ] )

=> t == 'tototiti'

or

replace = { '\x00' : ' ' }
t = ''.join( [ replace.get(i,i) for i in s
if i in printable
or i.isalpha() # to catch for example 'ë'
or i in replace ] )

=> t == 'toto titi'

 

[Roel Mathys]

Hello,

What's the best way to delete or replace no-printable characters in a string.
i.e.: "\x08toto\x00titi" -> "tototiti" or " toto titi"

import string
import sets
printable = sets.Set( string.printable )



def f1( s ) :
return ''.join( [ i for i in s if i in printable or i.isalpha() ] )

def f2( s ) :
replace = { '\x00' : ' ' }
t = ''.join(
[ replace.get(i,i)
for i in s
if i in printable
or i.isalpha() # for non ascii characters
or i in replace
] )

s = "\x08toto\x00titi"

t1 = f1(s) => 'tototiti'
t2 = f2(s) => 'toto titi'

works nicely, I think

bye,
roel