Add wxversion-specific error message. Closes #885.

efiring · efiring · commit cb92e314f1f7 · 2012-05-21T16:41:53.000-10:00
diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
@@ -37,12 +37,14 @@
 _DEBUG_lvls = {1 : 'Low ', 2 : 'Med ', 3 : 'High', 4 : 'Error' }
 
 missingwx = "Matplotlib backend_wx and backend_wxagg require wxPython >=2.8"
+missingwxversion = ("Matplotlib backend_wx and backend_wxagg "
+                    "require wxversion, which was not found.")
 
 if not hasattr(sys, 'frozen'): # i.e., not py2exe
     try:
         import wxversion
     except ImportError:
-        raise ImportError(missingwx)
+        raise ImportError(missingwxversion)
 
     # Some early versions of wxversion lack AlreadyImportedError.
     # It was added around 2.8.4?
