[libpeas] Improve the Python plugin loader's warnings

[Garrett Regier <gregier src gnome org>]

commit ed7332ff34da22798b562eb95d8a017f2eed83e4
Author: Garrett Regier <garrettregier gmail com>
Date:   Wed Sep 21 04:12:38 2011 -0700

    Improve the Python plugin loader's warnings

 loaders/python/peas-plugin-loader-python.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/loaders/python/peas-plugin-loader-python.c b/loaders/python/peas-plugin-loader-python.c
index 334f2d3..d279209 100644
--- a/loaders/python/peas-plugin-loader-python.c
+++ b/loaders/python/peas-plugin-loader-python.c
@@ -402,8 +402,9 @@ peas_plugin_loader_python_initialize (PeasPluginLoader *loader)
   pygobject_init (PYGOBJECT_MAJOR_VERSION, PYGOBJECT_MINOR_VERSION, PYGOBJECT_MICRO_VERSION);
   if (PyErr_Occurred ())
     {
-      g_warning ("Error initializing Python interpreter: could not "
-                 "import pygobject");
+      g_warning ("Error initializing Python Plugin Loader:"
+                 "PyGObject initialization failed");
+      PyErr_Print ();
 
       goto python_init_error;
     }
@@ -417,8 +418,8 @@ peas_plugin_loader_python_initialize (PeasPluginLoader *loader)
   gettext = PyImport_ImportModule ("gettext");
   if (gettext == NULL)
     {
-      g_warning ("Error initializing Python interpreter: could not "
-                 "import gettext");
+      g_warning ("Error initializing Python Plugin Loader: "
+                 "failed to import gettext");
 
       goto python_init_error;
     }
@@ -441,7 +442,8 @@ python_init_error:
   g_warning ("Please check the installation of all the Python related packages "
              "required by libpeas and try again");
 
-  PyErr_Clear ();
+  if (PyErr_Occurred ())
+    PyErr_Clear ();
 
   return FALSE;
 }