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Title: test_heapq: AttributeError: 'int' object has no attribute 'pop'
Type: behavior Stage: resolved
Components: Library (Lib), Tests Versions: Python 3.2
Status: closed Resolution: fixed
Dependencies: Superseder:
Assigned To: pitrou Nosy List: flox, pitrou, vstinner
Priority: normal Keywords: buildbot, patch

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

File name Uploaded Description Edit
addbuilddir.patch pitrou, 2010-08-13 18:34
c-addbuildir.patch pitrou, 2010-08-13 19:29
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)
   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
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/ 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/", 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.
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