Re: Help with python-list archives

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From	Ian Kelly <ian.g.kelly@gmail.com>
Date	Fri, 6 Jan 2012 00:41:01 -0700
Subject	Re: Help with python-list archives
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On Thu, Jan 5, 2012 at 8:00 PM, MRAB <python@mrabarnett.plus.com> wrote:
> import gzip
>
> in_file = gzip.open(r"C:\2012-January.txt.gz")
> out_file = open(r"C:\2012-January.txt.tmp", "wb")
> out_file.write(in_file.read())
> in_file.close()
> out_file.close()
>
> in_file = gzip.open(r"C:\2012-January.txt.tmp")
> out_file = open(r"C:\2012-January.txt", "wb")
> out_file.write(in_file.read())
> in_file.close()
> out_file.close()

One could also avoid creating the intermediate file by using a
StringIO to keep it in memory instead:

import gzip
from cStringIO import StringIO

in_file = gzip.open('2012-January.txt.gz')
tmp_file = StringIO(in_file.read())
in_file.close()
in_file = gzip.GzipFile(fileobj=tmp_file)
out_file = open('2012-January.txt', 'wb')
out_file.write(in_file.read())
in_file.close()
out_file.close()

Sadly, GzipFile won't read directly from another GzipFile instance
(ValueError: Seek from end not supported), so some sort of
intermediate is necessary.

Thread

Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-05 14:44 -0800
  Re: Help with python-list archives Miki Tebeka <miki.tebeka@gmail.com> - 2012-01-05 15:39 -0800
    Re: Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-05 15:52 -0800
      Re: Help with python-list archives Ian Kelly <ian.g.kelly@gmail.com> - 2012-01-05 17:10 -0700
        Re: Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-05 16:45 -0800
      Re: Help with python-list archives MRAB <python@mrabarnett.plus.com> - 2012-01-06 01:27 +0000
        Re: Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-05 18:14 -0800
          Re: Help with python-list archives MRAB <python@mrabarnett.plus.com> - 2012-01-06 03:00 +0000
            Re: Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-05 20:01 -0800
              Re: Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-05 20:08 -0800
                Re: Help with python-list archives Chris Angelico <rosuav@gmail.com> - 2012-01-06 15:12 +1100
                Re: Help with python-list archives Ian Kelly <ian.g.kelly@gmail.com> - 2012-01-06 00:45 -0700
                Re: Help with python-list archives Anssi Saari <as@sci.fi> - 2012-01-10 16:47 +0200
              Re: Help with python-list archives Chris Angelico <rosuav@gmail.com> - 2012-01-06 15:11 +1100
          Re: Help with python-list archives Ian Kelly <ian.g.kelly@gmail.com> - 2012-01-06 00:41 -0700
            Re: Help with python-list archives random joe <pywin32@gmail.com> - 2012-01-06 16:55 -0800
    Re: Help with python-list archives Ian Kelly <ian.g.kelly@gmail.com> - 2012-01-05 17:02 -0700

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