Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #91352

Re: Returning a custom file object (Python 3)

Date 2015-05-27 22:56 -0700
From Gary Herron <gherron@digipen.edu>
Subject Re: Returning a custom file object (Python 3)
References <55667a6d$0$13002$c3e8da3$5496439d@news.astraweb.com> <85iobdwhti.fsf@benfinney.id.au> <mailman.113.1432780860.5151.python-list@python.org> <87wpztclsu.fsf@elektro.pacujo.net>
Newsgroups comp.lang.python
Message-ID <mailman.120.1432792612.5151.python-list@python.org> (permalink)

Show all headers | View raw

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

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

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

csiph-web