[issue16601] Restarting iteration over tarfile continues from where it left off.

[Michael Birtwell]

Michael Birtwell added the comment:

Sorry about the delay in the contributor form. Things got in the way then I 
completely forgot about it. It's done now.

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Thank you for contribution.

I have committed simpler test.

--
resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed
versions:  -Python 3.2

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Roundup Robot]

Roundup Robot added the comment:

New changeset 9b86fb6f5bc9 by Serhiy Storchaka in branch '2.7':
Issue #16601: Restarting iteration over tarfile no more continues from where
http://hg.python.org/cpython/rev/9b86fb6f5bc9

New changeset 9ed127d8ad61 by Serhiy Storchaka in branch '3.3':
Issue #16601: Restarting iteration over tarfile no more continues from where
http://hg.python.org/cpython/rev/9ed127d8ad61

New changeset 1c6a1427353b by Serhiy Storchaka in branch 'default':
Issue #16601: Restarting iteration over tarfile no more continues from where
http://hg.python.org/cpython/rev/1c6a1427353b

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Michael, what's the status of your contributor form?

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Michael Birtwell, can you please submit a contributor form?

http://python.org/psf/contrib/contrib-form/
http://python.org/psf/contrib/

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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assignee:  -> serhiy.storchaka

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Andrew Svetlov]

Changes by Andrew Svetlov :


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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis :


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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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stage:  -> patch review

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


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nosy: +lars.gustaebel
versions: +Python 3.2, Python 3.3, Python 3.4

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Related issue: issue16631.

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Jesús Cea Avión]

Changes by Jesús Cea Avión :


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nosy: +jcea

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Michael Birtwell]

Michael Birtwell added the comment:

Here's a patch on the tarfile's unittest module.

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Added file: 
http://bugs.python.org/file28203/test-tarfile-restart-iteration.patch

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[R. David Murray]

R. David Murray added the comment:

Thanks for the patch.

Could you either include a test or post code that demonstrates the problem, 
please?

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Michael Birtwell]

Michael Birtwell added the comment:

Embarrassingly as soon as I uploaded that patch I found a problem with it. I 
hadn't taken in to account the special case for the first member.

Here's a replacement patch

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type:  -> behavior
Added file: 
http://bugs.python.org/file28202/fix-tarfile-restart-iteration2.patch

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[issue16601] Restarting iteration over tarfile continues from where it left off.

[Michael Birtwell]

New submission from Michael Birtwell:

If you partially iterate over a tarfile then try and restart iteration of that 
tarfile it will continue from where it left off rather than restarting from the 
beginning.

I've only tried this with the tarfile implementation in python 2.7 but the 3.x 
code looks the same in this respect.

I've included a patch with my approach to fixing this.

--
components: Library (Lib)
files: fix-tarfile-restart-iteration.patch
keywords: patch
messages: 176863
nosy: mbirtwell
priority: normal
severity: normal
status: open
title: Restarting iteration over tarfile continues from where it left off.
versions: Python 2.7
Added file: http://bugs.python.org/file28200/fix-tarfile-restart-iteration.patch

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