[Baypiggies] Crossplatform exceptions.WindowsError help

[Paul McNett]

Hi,

This code must run cross-platform:

try:
   ..
except WindowsError:
   ..

However, the WindowsError exception is only defined on Windows, not on 
Linux or Mac. How do I keep a spurious NameError from happening on the 
other platforms while still keeping the code clean (free from 
os-specific code blocks)?

I'm getting a WindowsError from some users sometimes, when doing 
webbrowser.open()[1][2]. I'd like to show a nice message rather then 
letting my global error handler kick in, but I have users on all platforms.

Thanks!
Paul

[1] It could be this bug, which I can't seem to open to investigate further:
http://mail.python.org/pipermail/python-bugs-list/2007-March/037608.html
(I get a message "Artifact: This Artifact Has Been Made Private. Only 
Group Members Can View Private ArtifactTypes.")

[2] Here's the traceback if you are curious:
"""
Shutter Studio Error Notification

          Customer: ----------
           License: ----------
    User Timestamp: 2008-04-14 21:15:40.187000
  Server Timestamp: 2008-04-14 21:15:45.739410
Version, Platform: 0.9.18 Windows-XP-5.1.2600-SP2
  Exception Object: [Error 2] The system cannot find the file specified: 
u'http://sanbenitoshutter.com'
    Exception Type: <type 'exceptions.WindowsError'>
       Active Form:
    Active Control:

Traceback (most recent call last):
   File "dabo\ui\uiwx\dHtmlBox.pyo", line 52, in __onWxLinkClicked
   File "dabo\ui\uiwx\dPemMixin.pyo", line 894, in raiseEvent
   File "dabo\lib\eventMixin.pyo", line 93, in raiseEvent
   File "ss_common\ui\FrmAboutBase.pyo", line 51, in onHtmlLinkClicked
   File "webbrowser.pyo", line 60, in open
   File "webbrowser.pyo", line 516, in open
<type 'exceptions.WindowsError'>: [Error 2] The system cannot find the 
file specified: u'http://sanbenitoshutter.com'

=======================================================
User Notes:

=======================================================
"""