Wrapped imports in try/except so as to make it easier to find out the version number when dependencies are missing, for gholt's use case.

eventlet/__init__.py

@@ -1,6 +1,7 @@
 version_info = (0, 9, 3)
 __version__ = '%s.%s.%s' % version_info
 
+try:
     from eventlet import greenthread
     from eventlet import greenpool
     from eventlet import queue
@@ -18,3 +19,7 @@ GreenPool = greenpool.GreenPool
     GreenPile = greenpool.GreenPile
     
     Queue = queue.Queue
+except ImportError:
+    # this is to make Debian packaging easier
+    import traceback
+    traceback.print_exc()