Issue 9589: test_heapq: AttributeError: 'int' object has no attribute 'pop'

Created on 2010-08-13 17:31 by flox, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (7) msg113798 - (view) Author: Florent Xicluna (flox) * (Python committer) Date: 2010-08-13 17:31
Various buildbots show a failure on test_heapq.

 * "x86 FreeBSD 3.x" failed on revision r83882 (r83869 was OK)
   http://www.python.org/dev/buildbot/all/builders/x86%20FreeBSD%203.x/builds/492
   and next runs were OK, too

 * "PPC (Leopard|Tiger) 3.x" and "x86 Tiger 3.x" fail consistently from r83889 onwards.

 * all "gentoo 3.x" and "Ubuntu 3.x" fail on r83981
   http://www.python.org/dev/buildbot/all/builders/x86%20gentoo%203.x/builds/2816
   http://www.python.org/dev/buildbot/all/builders/x86%20Ubuntu%203.x/builds/1707
msg113800 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2010-08-13 17:45
This is a variant of the kind of annoyance pointed out in #9548. Here, it seems addbuilddir() in Lib/site.py shouldn't import sysconfig, because it imports the re module.
msg113801 - (view) Author: Florent Xicluna (flox) * (Python committer) Date: 2010-08-13 17:49
For some reason, sys.modules['heapq'] contains the Python implementation instead of the C implementation.

Tested with r83981 on python 3:

Python 3.2a1+ (py3k:83981M, Aug 13 2010, 19:02:31) 
[GCC 4.3.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> import heapq
>>> heapq.heappop(10)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/florent/dev/python/py3trunk/Lib/heapq.py", line 140, in heappop
    lastelt = heap.pop()    # raises appropriate IndexError if heap is empty
AttributeError: 'int' object has no attribute 'pop'

>>> import _heapq
>>> _heapq.heappop(10)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: heap argument must be a list


These tests (TestErrorHandling) are supposed to run with the C module only.
msg113806 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2010-08-13 18:34
Here is a patch which works if the patch in #9548 is also applied.
It won't work alone because opening a file in text mode currently imports locale which imports re, etc. ... all before adding the build dir to sys.path.

Of course, since the logic in addbuilddir() is now much simpler, it could also be rewritten in C somewhere (where?), and the launched much earlier during the startup phase.
msg113819 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2010-08-13 19:29
Here is a C version of addbuilddir. It solves the present issue.
msg113844 - (view) Author: Antoine Pitrou (pitrou) * (Python committer) Date: 2010-08-13 22:26
I've committed an updated version of the C patch in r83988, after Victor's comments on IRC.
msg113882 - (view) Author: STINNER Victor (vstinner) * (Python committer) Date: 2010-08-14 09:47
r83988 is also the correct fix for #586680: I updated this issue.
History Date User Action Args 2022-04-11 14:57:05adminsetgithub: 53798 2010-08-14 09:47:21vstinnersetmessages: + msg113882 2010-08-13 22:40:21pitrousetstatus: open -> closed 2010-08-13 22:34:33pitrousetstatus: pending -> open
assignee: pitrou 2010-08-13 22:26:04pitrousetstatus: open -> pending
resolution: fixed
messages: + msg113844

stage: needs patch -> resolved

2010-08-13 22:20:54pitroulinkissue586680 superseder 2010-08-13 19:29:26pitrousetfiles: + c-addbuildir.patch

messages: + msg113819

2010-08-13 18:34:05pitrousetfiles: + addbuilddir.patch
keywords: + patch
messages: + msg113806
2010-08-13 17:49:10floxsetmessages: + msg113801 2010-08-13 17:45:06pitrousetnosy: + pitrou
messages: + msg113800
2010-08-13 17:31:13floxcreate