Bug 531082 - RFE: add detection of Python 3 bytecode
Summary: RFE: add detection of Python 3 bytecode
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: file
Version: rawhide
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Daniel Novotny
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: Python3F13 809898
TreeView+ depends on / blocked
 
Reported: 2009-10-26 20:14 UTC by Dave Malcolm
Modified: 2012-04-04 15:49 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 557608 809898 (view as bug list)
Environment:
Last Closed: 2009-10-27 12:51:03 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
Add bytecode values for Python 3.0 and 3.1 (1.04 KB, patch)
2009-10-26 20:14 UTC, Dave Malcolm
no flags Details | Diff

Description Dave Malcolm 2009-10-26 20:14:20 UTC
Created attachment 366152 [details]
Add bytecode values for Python 3.0 and 3.1

Description of problem:
Attached is a patch that adds support for Python 3.0 and Python 3.1 bytecode files to the .pyc/.pyo support.

With this file:
$ file /usr/lib/python3.1/re.pyo
/usr/lib/python3.1/re.pyo: python 3.1 byte-compiled

Caveat: only tested with 3.1; I calculated up the value for 3.0 from the source in python's py3k branch's Python/import.c:
[snip]
       Python 3.0a5: 3130 (lexical exception stacking, including POP_EXCEPT)
[snip]
       Python 3.1a0: 3150 (optimize conditional branches:
			   introduce POP_JUMP_IF_FALSE and POP_JUMP_IF_TRUE)
[snip]

Note that the value has 1 added to it in py3k's _PyImport_Init,
giving:
  python 3.0: magic=3131 = 0x0c3b (hex) =  0x3b 0x0c 0xc0 0xd0a (header)
and 
  python 3.1: magic=3151 = 0x0c4f (hex) =  0x4f 0x0c 0x0d 0x0a (header)

Comment 1 Dave Malcolm 2009-10-26 20:17:38 UTC
>  python 3.0: magic=3131 = 0x0c3b (hex) =  0x3b 0x0c 0xc0 0xd0a (header)
should read:
>  python 3.0: magic=3131 = 0x0c3b (hex) =  0x3b 0x0c 0xc0 0x0a (header)

Comment 2 Dave Malcolm 2009-10-26 20:50:27 UTC
I've sent the patch to the upstream mailing list (file.com), but it's current stuck in the moderator queue as I'm not yet subscribed (they seem to require human intervention for approving subscriptions)

Comment 3 Daniel Novotny 2009-10-27 12:51:03 UTC
hello Dave, thanks for the patch, added in file-5.03-11.fc13

I am subscribed to the list, so if your post doesn't show up there I can send the patch from my address.

Comment 4 Daniel Novotny 2009-10-27 14:04:57 UTC
...now I see your mail in the upstream mailing list

Comment 5 Dave Malcolm 2009-10-27 14:15:00 UTC
(In reply to comment #4)
> ...now I see your mail in the upstream mailing list  
http://mx.gw.com/pipermail/file/2009/000483.html


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