Moved to try block

Author: rbotzer

README.md

@@ -2,3 +2,35 @@
 
 This is companion code for my Medium article.
 
+## Populate Test Data
+
+```
+chmod +x run_sensors.sh
+./run_sensors.sh
+```
+
+## Query the Data
+
+```
+python query_iot_data.py --help
+usage: query_iot_data.py [--help] [-U <USERNAME>] [-P <PASSWORD>]
+                         [-h <ADDRESS>] [-p <PORT>] [-n <NS>] [-s <SET>]
+                         [--sensor <SENSOR-ID>] [-i]
+
+optional arguments:
+  --help                Displays this message.
+  -U <USERNAME>, --username <USERNAME>
+                        Username to connect to database.
+  -P <PASSWORD>, --password <PASSWORD>
+                        Password to connect to database.
+  -h <ADDRESS>, --host <ADDRESS>
+                        Address of Aerospike server.
+  -p <PORT>, --port <PORT>
+                        Port of the Aerospike server.
+  -n <NS>, --namespace <NS>
+                        Port of the Aerospike server.
+  -s <SET>, --set <SET>
+                        Port of the Aerospike server.
+  --sensor <SENSOR-ID>  Sensor ID
+  -i, --interactive     Interactive Mode
+```

query_iot_data.py

@@ -130,14 +130,13 @@ def print_sensor_data(rec, pp):
 pp = pprint.PrettyPrinter(indent=2)
 sensor_id = options.sensor_id
 spacer = "=" * 30
-minute = 0
-key = (namespace, set, "sensor{}-12-31".format(sensor_id))
-print("\nRetrieve sensor{} data for 8-11am, December 31st".format(sensor_id))
-if options.interactive:
-    pause()
-starts = 8 * 60
-ends = 11 * 60
 try:
+    key = (namespace, set, "sensor{}-12-31".format(sensor_id))
+    print("\nRetrieve sensor{} data for 8-11am, December 31st".format(sensor_id))
+    if options.interactive:
+        pause()
+    starts = 8 * 60
+    ends = 11 * 60
     ops = [
         lh.list_get_by_value_range(
             "t",