--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Samples/Python/ChangesLoop.py	Thu Jan 17 15:54:02 2013 +0100
@@ -0,0 +1,42 @@
+#!/usr/bin/python
+
+import time
+import sys
+import RestToolbox
+
+if len(sys.argv) != 3:
+    print("""
+Sample script that continuously monitors the arrival of new DICOM
+images into Orthanc (through the Changes API).
+
+Usage: %s [hostname] [HTTP port]
+For instance: %s localhost 8042
+""" % (sys.argv[0], sys.argv[0]))
+    exit(-1)
+
+URL = 'http://%s:%d' % (sys.argv[1], int(sys.argv[2]))
+
+
+def NewInstanceReceived(path):
+    print 'New instance received: "%s"' % path
+
+
+URL = 'http://localhost:8042'
+current = 0
+while True:
+    r = RestToolbox.DoGet(URL + '/changes', {
+            'since' : current,
+            'limit' : 4 
+            })
+
+    for change in r['Changes']:
+        if change['ChangeType'] == 'NewInstance':
+            path = change['Path']
+            NewInstanceReceived(path)
+            RestToolbox.DoDelete(URL + path)
+
+    current = r['Last']
+
+    if r['Done']:
+        print "Everything has been processed: Waiting..."
+        time.sleep(1)