Usage information

Author: Vanuan

insert_osm_data.py

@@ -181,6 +181,10 @@ def parse(self, file_obj):
             root.clear()
 
 if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print "Usage: %s <OSM filename>" % (sys.argv[0])
+        sys.exit(-1)
+
     filename = sys.argv[1]
 
     if not os.path.exists(filename):