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Groups > comp.lang.python > #99976

Re: 'string.join' is wrong in my Python console

From Terry Reedy <tjreedy@udel.edu>
Newsgroups comp.lang.python
Subject Re: 'string.join' is wrong in my Python console
Date 2015-12-03 12:23 -0500
Message-ID <mailman.181.1449163450.14615.python-list@python.org> (permalink)
References <88afafc5-699f-46ea-aaca-7e78b75a4552@googlegroups.com> <mailman.162.1449133357.14615.python-list@python.org> <n3pov1$ih2$1@news.albasani.net>

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On 12/3/2015 11:00 AM, Robin Koch wrote:
> Am 03.12.2015 um 10:02 schrieb Gary Herron:
>> On 12/02/2015 10:55 PM, Robert wrote:
>>> Hi,
>>>
>>> I read the tutorial on "Why is join() a string method instead of a list
>>>   or tuple method?"
>>> at link:
>>> https://docs.python.org/2/faq/design.html#why-must-self-be-used-explicitly-in-method-definitions-and-calls
>>>
>>>
>>>
>>> I have a problem on running the last line:
>>> ---------------
>>> If none of these arguments persuade you, then for the moment you can
>>>   continue to use the join() function from the string module, which
>>> allows
>>>   you to write
>>>
>>> string.join(['1', '2', '4', '8', '16'], ", ")
>>> -----------------------
...
>> You are trying to use the *string* module without importing it, I'd
>> guess.
>>
>> Try:
>>      import string
>> first then you should be able to access string.join without error.
>
> Now *I* am confused.
>
> Shouldn't it be
>
> ", ".join(['1', '2', '4', '8', '16'])
>
> instead? Without any importing?

Yes, that is what one *should* do in late 2.x and indeed must do in 3.x, 
where the string module has been stripped of the functions that later 
became string methods.  The FAQ entry was written when the join method 
was new as a method and some people were upset by the reversal of the 
order of the two arguments, an iterable of strings and the joining string.

-- 
Terry Jan Reedy

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Thread

'string.join' is wrong in my Python console Robert <rxjwg98@gmail.com> - 2015-12-02 22:55 -0800
  Re: 'string.join' is wrong in my Python console dieter <dieter@handshake.de> - 2015-12-03 08:39 +0100
  Re: 'string.join' is wrong in my Python console Sijan Bhandari <sijanonly@gmail.com> - 2015-12-02 23:59 -0800
  Re: 'string.join' is wrong in my Python console Gary Herron <gherron@digipen.edu> - 2015-12-03 01:02 -0800
    Re: 'string.join' is wrong in my Python console Robin Koch <robin.koch@t-online.de> - 2015-12-03 17:00 +0100
      Re: 'string.join' is wrong in my Python console MRAB <python@mrabarnett.plus.com> - 2015-12-03 16:24 +0000
      Re: 'string.join' is wrong in my Python console Ian Kelly <ian.g.kelly@gmail.com> - 2015-12-03 09:25 -0700
        Re: 'string.join' is wrong in my Python console Robin Koch <robin.koch@t-online.de> - 2015-12-03 18:01 +0100
          Re: 'string.join' is wrong in my Python console Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-03 17:42 +0000
            Re: 'string.join' is wrong in my Python console Robin Koch <robin.koch@t-online.de> - 2015-12-03 19:15 +0100
      Re: 'string.join' is wrong in my Python console Terry Reedy <tjreedy@udel.edu> - 2015-12-03 12:23 -0500
        Re: 'string.join' is wrong in my Python console Robin Koch <robin.koch@t-online.de> - 2015-12-03 19:16 +0100

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