Bug#599047: python-tz: use of pytz generates UserWarning about repeated imports

[Geoff Crompton]

Package: python-tz
Version: 2008c-2
Severity: normal

I have a script that imports some django (and hence mysql) libraries, before
then importing pytz. When I run the script I see:

geoffc at chiraz:~/svk/passwordaging/trunk/bin$ ./report-force-change-rate 
/usr/lib/python2.5/site-packages/pytz/__init__.py:29: UserWarning: Module
_mysql was already imported from
/var/lib/python-support/python2.5/_mysql.so, but
/var/lib/python-support/python2.5 is being added to sys.path
  from pkg_resources import resource_stream

I've patched the lenny package to get one that works for me, the diff is:
--- python-tz-2008c.orig/pytz/__init__.py
+++ python-tz-2008c/pytz/__init__.py
@@ -25,11 +25,6 @@
 
 import sys, datetime, os.path, gettext
 
-try:
-    from pkg_resources import resource_stream
-except ImportError:
-    resource_stream = None
-


It looks like the only place that resource_stream gets used in 
pytz/__init__.py has already been removed by the debian specific patch. 
So removing the attempt to import it seems to make sense. I have to admit
that I don't know python well enough to understand what resource_stream
is used for, or to understand the warning I'm getting. 

I had a look at the 2010b-1 package, and it looks like this code is still
present in squeeze and sid as well. So I imagine I'd get the same warning,
though I haven't confirmed this on a squeeze or sid system.

-- System Information:
Debian Release: 5.0.6
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-2-686 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages python-tz depends on:
ii  python                     2.5.2-3       An interactive high-level object-o
ii  python-central             0.6.8         register and build utility for Pyt
ii  tzdata                     2010j-0lenny1 time zone and daylight-saving time

python-tz recommends no packages.

python-tz suggests no packages.

-- no debconf information