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My string module doesn't have maketrans or translate functions

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  My string module doesn't have maketrans or translate functions Lamb <lambandme@gmail.com> - 2013-04-11 08:30 -0700
    Re: My string module doesn't have maketrans or translate functions Chris Angelico <rosuav@gmail.com> - 2013-04-12 01:45 +1000
      Re: My string module doesn't have maketrans or translate functions Lamb <lambandme@gmail.com> - 2013-04-11 09:05 -0700
        Re: My string module doesn't have maketrans or translate functions Chris Angelico <rosuav@gmail.com> - 2013-04-12 02:09 +1000
      Re: My string module doesn't have maketrans or translate functions Lamb <lambandme@gmail.com> - 2013-04-11 09:05 -0700
    Re: My string module doesn't have maketrans or translate functions Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-04-11 17:56 +0100
      Re: My string module doesn't have maketrans or translate functions Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-04-12 00:17 +0000

#43380 — My string module doesn't have maketrans or translate functions

Hi all,
 I'm really new to python and trying to figure out the basic rule and settings of it. I'm using python 3.3 and I was trying this code in python:

import string
s = "string. With. Punctuation?" 
out = s.translate(string.maketrans("",""), string.punctuation)

And I got the following error:
Traceback (most recent call last):
  File "C:/Python33/trials/ls.py", line 5, in <module>
    out = s.translate(string.maketrans("",""), string.punctuation)
AttributeError: 'module' object has no attribute 'maketrans'

So I used the following to see functions inside string
e=dir(string)
>>> print(e)
['ChainMap', 'Formatter', 'Template', '_TemplateMetaclass', '__builtins__', '__cached__', '__doc__', '__file__', '__initializing__', '__loader__', '__name__', '__package__', '_re', '_string', 'ascii_letters', 'ascii_lowercase', 'ascii_uppercase', 'capwords', 'digits', 'hexdigits', 'octdigits', 'printable', 'punctuation', 'whitespace']

It doesn't have translate(), maketrans(), rstrip() and a whole lot of other things. What's the problem?

Thanks!

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#43384

On Fri, Apr 12, 2013 at 1:30 AM, Lamb <lambandme@gmail.com> wrote:
> import string
> s = "string. With. Punctuation?"
> out = s.translate(string.maketrans("",""), string.punctuation)

Try this instead:

import string
s = "string. With. Punctuation?"
out = s.translate(str.maketrans("", "", string.punctuation))

Due to the changes in string handling (s is a Unicode string in Python
3, not a string of bytes), str.translate() got changed. Check out
help(str.maketrans) and help(str.translate) in interactive Python for
more details.

ChrisA

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#43385

Thanks! It worked! But why didn't I see functions : translate(), maketrans(), rstrip(), etc. listed when I called print(dir(string))?

On Thursday, April 11, 2013 11:45:05 AM UTC-4, Chris Angelico wrote:
> 
> > import string
> 
> > s = "string. With. Punctuation?"
> 
> > out = s.translate(string.maketrans("",""), string.punctuation)
> 
> 
> 
> Try this instead:
> 
> 
> 
> import string
> 
> s = "string. With. Punctuation?"
> 
> out = s.translate(str.maketrans("", "", string.punctuation))
> 
> 
> 
> Due to the changes in string handling (s is a Unicode string in Python
> 
> 3, not a string of bytes), str.translate() got changed. Check out
> 
> help(str.maketrans) and help(str.translate) in interactive Python for
> 
> more details.
> 
> 
> 
> ChrisA

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#43387

On Fri, Apr 12, 2013 at 2:05 AM, Lamb <lambandme@gmail.com> wrote:
> Thanks! It worked! But why didn't I see functions : translate(), maketrans(), rstrip(), etc. listed when I called print(dir(string))?

Because they're not in the string module any more - they're methods on
str (and bytes). Try checking out dir(str) - str being the class of
your basic Unicode string now, rather than being the type of a string
of bytes - and you should see them all.

ChrisA

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#43386

Thanks! It worked! But why didn't I see functions : translate(), maketrans(), rstrip(), etc. listed when I called print(dir(string))?

On Thursday, April 11, 2013 11:45:05 AM UTC-4, Chris Angelico wrote:
> 
> > import string
> 
> > s = "string. With. Punctuation?"
> 
> > out = s.translate(string.maketrans("",""), string.punctuation)
> 
> 
> 
> Try this instead:
> 
> 
> 
> import string
> 
> s = "string. With. Punctuation?"
> 
> out = s.translate(str.maketrans("", "", string.punctuation))
> 
> 
> 
> Due to the changes in string handling (s is a Unicode string in Python
> 
> 3, not a string of bytes), str.translate() got changed. Check out
> 
> help(str.maketrans) and help(str.translate) in interactive Python for
> 
> more details.
> 
> 
> 
> ChrisA

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#43391

On 11/04/2013 16:30, Lamb wrote:
> Hi all,
>   I'm really new to python and trying to figure out the basic rule and settings of it. I'm using python 3.3 and I was trying this code in python:
>
> import string
> s = "string. With. Punctuation?"
> out = s.translate(string.maketrans("",""), string.punctuation)
>
> And I got the following error:
> Traceback (most recent call last):
>    File "C:/Python33/trials/ls.py", line 5, in <module>
>      out = s.translate(string.maketrans("",""), string.punctuation)
> AttributeError: 'module' object has no attribute 'maketrans'
>
> So I used the following to see functions inside string
> e=dir(string)
>>>> print(e)
> ['ChainMap', 'Formatter', 'Template', '_TemplateMetaclass', '__builtins__', '__cached__', '__doc__', '__file__', '__initializing__', '__loader__', '__name__', '__package__', '_re', '_string', 'ascii_letters', 'ascii_lowercase', 'ascii_uppercase', 'capwords', 'digits', 'hexdigits', 'octdigits', 'printable', 'punctuation', 'whitespace']
>
> It doesn't have translate(), maketrans(), rstrip() and a whole lot of other things. What's the problem?
>
> Thanks!
>

The string module is effectively dead.  Many functions were deprecated 
back in 2.6, maketrans in 3.1, just use string methods instead.

-- 
If you're using GoogleCrap™ please read this 
http://wiki.python.org/moin/GoogleGroupsPython.

Mark Lawrence

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#43406

On Thu, 11 Apr 2013 17:56:51 +0100, Mark Lawrence wrote:

> The string module is effectively dead.

It's not dead, it's pining for the fjords.

But seriously, the string module holds a collection of useful string 
constants and the Template class. 


-- 
Steven

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