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Re: Returning a custom file object (Python 3)

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Date Wed, 27 May 2015 22:56:41 -0700
From Gary Herron <gherron@digipen.edu>
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Subject Re: Returning a custom file object (Python 3)
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On 05/27/2015 10:29 PM, Marko Rauhamaa wrote:
> Ben Finney <ben+python@benfinney.id.au>:
>
>> It seems the existing ‘open’ implementation doesn't allow you to
>> override the type of object returned.
> The question is, can you assign to the builtin namespace. I'm guessing
> you can't.

Of course you can.

Python2:
 >>> __builtins__.open = "whatever"
 >>>

Python3:
 >>> import builtins
 >>> builtins.open = "whatever"
 >>>

Of course doing so is like shooting yourself in the foot:  Any 
subsequent pain is your own fault and probably well deserved.

Gary Herron



>
> Within a module, you can simply do:
>
>     open = MyFile
>
> Also, in other modules, you can:
>
>     from myfile import open
>
>
> Marko


-- 
Dr. Gary Herron
Department of Computer Science
DigiPen Institute of Technology
(425) 895-4418

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Thread

Returning a custom file object (Python 3) Steven D'Aprano <steve@pearwood.info> - 2015-05-28 12:16 +1000
  Re: Returning a custom file object (Python 3) Ben Finney <ben+python@benfinney.id.au> - 2015-05-28 12:40 +1000
    Re: Returning a custom file object (Python 3) Marko Rauhamaa <marko@pacujo.net> - 2015-05-28 08:29 +0300
      Re: Returning a custom file object (Python 3) Chris Angelico <rosuav@gmail.com> - 2015-05-28 15:49 +1000
        Re: Returning a custom file object (Python 3) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-28 17:04 +1000
          Re: Returning a custom file object (Python 3) Chris Angelico <rosuav@gmail.com> - 2015-05-28 19:06 +1000
      Re: Returning a custom file object (Python 3) Gary Herron <gherron@digipen.edu> - 2015-05-27 22:56 -0700
        Re: Returning a custom file object (Python 3) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-28 16:52 +1000
  Re: Returning a custom file object (Python 3) Ben Finney <ben+python@benfinney.id.au> - 2015-05-28 12:34 +1000
  Re: Returning a custom file object (Python 3) Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-05-28 10:29 +0100

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