Add a frequency setting on the tracker

README.md

@@ -22,7 +22,7 @@ This package provides a simple tracker script, `urbantz.tracker`, that can be
 invoked like this:
 
 ``` bash
-python -m urbantz.tracker <ID> [-f|--freq <seconds>]
+python -m urbantz.tracker <ID> [-f|--frequency <seconds>]
 ```
 
 The script will perform a request every 10 seconds (by default) to the

urbantz/tracker.py

@@ -16,6 +16,12 @@ def main():
         metavar='ID',
         help='A unique UrbanTZ delivery ID',
     )
+    parser.add_argument(
+        '-f', '--frequency',
+        type=int,
+        default=10,
+        help='Update frequency in seconds',
+    )
     options = parser.parse_args()
     delivery = options['delivery']
 
@@ -29,9 +35,9 @@ def main():
 
         print("{} {} meters".format(
             delivery.last_updated.isoformat(),
-            round(delivery.position.distance(delivery.destination), 1)
+            round(delivery.position.distance(delivery.destination), 1),
         ))
-        sleep(10)
+        sleep(options['frequency'])
 
 
 if __name__ == '__main__':