python2.7-dbg unable to import non-dbg C modules

python2.7-dbg will attempt and fail to load non-debug C modules when the debug packages are not installed. For instance, I get the following exception when trying to import dbus:

evan@caron:~$ python2.7-dbg
Python 2.7.2+ (default, Oct 4 2011, 21:24:50)
[GCC 4.6.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
[39102 refs]
>>> sys.excepthook = sys.__excepthook__
[39102 refs]
>>> import dbus
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/dist-packages/dbus/__init__.py", line 79, in <module>
    import dbus.types as types
  File "/usr/lib/python2.7/dist-packages/dbus/types.py", line 6, in <module>
    from _dbus_bindings import ObjectPath, ByteArray, Signature, Byte,\
ImportError: /usr/lib/python2.7/dist-packages/_dbus_bindings.so: undefined symbol: Py_InitModule4_64
[40053 refs]

(I reset the excepthook because apport imports apt_pkg, which also triggers this issue and complicates the backtrace)

Installing the python-dbus-dbg package works around this issue successfully, but there's no indication in the docs that this is necessary.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: python2.7-dbg 2.7.2-5ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
CheckboxSubmission: d27dbc9ce66475289526ca4b283ec487
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Mon Oct 10 15:34:46 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: python2.7
UpgradeStatus: Upgraded to oneiric on 2011-09-18 (22 days ago)