minor

modules/util/setup.py

 # To support both python 2 and python 3
 from __future__ import division, print_function, unicode_literals
 
-import os
+import os, sys
 
 from pathlib import Path
 
@@ -29,12 +29,20 @@ cachepath = cachepath+'.pkl'
 
 try:
     user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
-    python_path = user_paths[0] + os.sep
+    python_path = None
+    if len(user_paths) > 1:
+        for up in user_paths:
+            if up.find('cimss_icing') > 0:
+                python_path = up + os.sep
+    else:
+        python_path = user_paths[0] + os.sep
+    if python_path is None:
+        print('** No PYTHONPATH found containing cimss_icing/model *', file=sys.stderr)
     ancillary_path = python_path + 'ancillary' + os.sep
     model_path_day = python_path + 'tf_model_day' + os.sep
     model_path_night = python_path + 'tf_model_night' + os.sep
 except KeyError:
-    print('** PYTHONPATH must be defined! *')
+    print('** PYTHONPATH must be defined! *', file=sys.stderr)
     python_path = None
 
 gpu_devices = {0: '/device:GPU:0', 1: '/device:GPU:1', 2: '/device:GPU:2'}