diff --git a/dishHistoryInflux.py b/dishHistoryInflux.py
index b1a9b3e..07e43f7 100644
--- a/dishHistoryInflux.py
+++ b/dishHistoryInflux.py
@@ -152,13 +152,13 @@ def main():
     gstate.dish_id = None
     gstate.points = []
 
-    def conn_error(msg):
+    def conn_error(msg, *args):
         # Connection errors that happen in an interval loop are not critical
         # failures, but are interesting enough to print in non-verbose mode.
         if loop_time > 0:
-            print(msg)
+            print(msg % args)
         else:
-            logging.error(msg)
+            logging.error(msg, *args)
 
     def flush_points(client):
         try:
@@ -167,7 +167,7 @@ def main():
                 print("Data points written: " + str(len(gstate.points)))
                 gstate.points.clear()
         except Exception as e:
-            conn_error("Failed writing to InfluxDB database: " + str(e))
+            conn_error("Failed writing to InfluxDB database: %s", str(e))
             return 1
 
         return 0
@@ -179,7 +179,7 @@ def main():
                 if verbose:
                     print("Using dish ID: " + gstate.dish_id)
             except starlink_grpc.GrpcError as e:
-                conn_error("Failure getting dish ID: " + str(e))
+                conn_error("Failure getting dish ID: %s", str(e))
                 return 1
 
         timestamp = datetime.datetime.utcnow()
@@ -187,7 +187,7 @@ def main():
         try:
             g_stats, pd_stats, rl_stats = starlink_grpc.history_ping_stats(samples, verbose)
         except starlink_grpc.GrpcError as e:
-            conn_error("Failure getting ping stats: " + str(e))
+            conn_error("Failure getting ping stats: %s", str(e))
             return 1
 
         all_stats = g_stats.copy()
diff --git a/dishHistoryMqtt.py b/dishHistoryMqtt.py
index 1e7b855..a4349d4 100644
--- a/dishHistoryMqtt.py
+++ b/dishHistoryMqtt.py
@@ -124,13 +124,13 @@ def main():
     gstate = GlobalState()
     gstate.dish_id = None
 
-    def conn_error(msg):
+    def conn_error(msg, *args):
         # Connection errors that happen in an interval loop are not critical
         # failures, but are interesting enough to print in non-verbose mode.
         if loop_time > 0:
-            print(msg)
+            print(msg % args)
         else:
-            logging.error(msg)
+            logging.error(msg, *args)
 
     def loop_body():
         if gstate.dish_id is None:
@@ -139,13 +139,13 @@ def main():
                 if verbose:
                     print("Using dish ID: " + gstate.dish_id)
             except starlink_grpc.GrpcError as e:
-                conn_error("Failure getting dish ID: " + str(e))
+                conn_error("Failure getting dish ID: %s", str(e))
                 return 1
 
         try:
             g_stats, pd_stats, rl_stats = starlink_grpc.history_ping_stats(samples, verbose)
         except starlink_grpc.GrpcError as e:
-            conn_error("Failure getting ping stats: " + str(e))
+            conn_error("Failure getting ping stats: %s", str(e))
             return 1
 
         topic_prefix = "starlink/dish_ping_stats/" + gstate.dish_id + "/"
@@ -163,7 +163,7 @@ def main():
             if verbose:
                 print("Successfully published to MQTT broker")
         except Exception as e:
-            conn_error("Failed publishing to MQTT broker: " + str(e))
+            conn_error("Failed publishing to MQTT broker: %s", str(e))
             return 1
 
         return 0
diff --git a/dishHistoryStats.py b/dishHistoryStats.py
index f08ac84..45a4ee1 100644
--- a/dishHistoryStats.py
+++ b/dishHistoryStats.py
@@ -98,7 +98,7 @@ def main():
         try:
             g_stats, pd_stats, rl_stats = starlink_grpc.history_ping_stats(samples, verbose)
         except starlink_grpc.GrpcError as e:
-            logging.error("Failure getting ping stats: " + str(e))
+            logging.error("Failure getting ping stats: %s", str(e))
             return 1
 
         if verbose:
diff --git a/dishStatusInflux.py b/dishStatusInflux.py
index 0c00b41..6a708f3 100644
--- a/dishStatusInflux.py
+++ b/dishStatusInflux.py
@@ -159,13 +159,13 @@ def main():
             tags = ["id"]
             retention_policy = rp
 
-    def conn_error(msg):
+    def conn_error(msg, *args):
         # Connection errors that happen in an interval loop are not critical
         # failures, but are interesting enough to print in non-verbose mode.
         if loop_time > 0:
-            print(msg)
+            print(msg % args)
         else:
-            logging.error(msg)
+            logging.error(msg, *args)
 
     def flush_pending(client):
         try:
@@ -174,7 +174,7 @@ def main():
                 print("Data points written: " + str(gstate.pending))
             gstate.pending = 0
         except Exception as e:
-            conn_error("Failed writing to InfluxDB database: " + str(e))
+            conn_error("Failed writing to InfluxDB database: %s", str(e))
             return 1
 
         return 0
diff --git a/dishStatusMqtt.py b/dishStatusMqtt.py
index ce84ab6..06a1324 100644
--- a/dishStatusMqtt.py
+++ b/dishStatusMqtt.py
@@ -107,13 +107,13 @@ def main():
     gstate = GlobalState()
     gstate.dish_id = None
 
-    def conn_error(msg):
+    def conn_error(msg, *args):
         # Connection errors that happen in an interval loop are not critical
         # failures, but are interesting enough to print in non-verbose mode.
         if loop_time > 0:
-            print(msg)
+            print(msg % args)
         else:
-            logging.error(msg)
+            logging.error(msg, *args)
 
     def loop_body():
         try:
@@ -166,7 +166,7 @@ def main():
             if verbose:
                 print("Successfully published to MQTT broker")
         except Exception as e:
-            conn_error("Failed publishing to MQTT broker: " + str(e))
+            conn_error("Failed publishing to MQTT broker: %s", str(e))
             return 1
 
         return 0
diff --git a/parseJsonHistory.py b/parseJsonHistory.py
index 50fe1ff..e12d676 100644
--- a/parseJsonHistory.py
+++ b/parseJsonHistory.py
@@ -89,7 +89,7 @@ try:
     g_stats, pd_stats, rl_stats = starlink_json.history_ping_stats(args[0] if args else "-",
                                                                    samples, verbose)
 except starlink_json.JsonError as e:
-    logging.error("Failure getting ping stats: " + str(e))
+    logging.error("Failure getting ping stats: %s", str(e))
     sys.exit(1)
 
 if verbose:
diff --git a/starlink_grpc.py b/starlink_grpc.py
index ec65b14..40e3572 100644
--- a/starlink_grpc.py
+++ b/starlink_grpc.py
@@ -108,6 +108,7 @@ def get_status():
         response = stub.Handle(spacex.api.device.device_pb2.Request(get_status={}))
     return response.dish_get_status
 
+
 def get_id():
     """Return the ID from the dish status information.
 
@@ -124,6 +125,7 @@ def get_id():
     except grpc.RpcError as e:
         raise GrpcError(e)
 
+
 def history_ping_field_names():
     """Return the field names of the packet loss stats.
 
@@ -133,7 +135,7 @@ def history_ping_field_names():
         stat names.
     """
     return [
-        "samples"
+        "samples",
     ], [
         "total_ping_drop",
         "count_full_ping_drop",
@@ -142,14 +144,15 @@ def history_ping_field_names():
         "count_full_obstructed_ping_drop",
         "count_unscheduled",
         "total_unscheduled_ping_drop",
-        "count_full_unscheduled_ping_drop"
+        "count_full_unscheduled_ping_drop",
     ], [
         "init_run_fragment",
         "final_run_fragment",
         "run_seconds",
-        "run_minutes"
+        "run_minutes",
     ]
 
+
 def get_history():
     """Fetch history data and return it in grpc structure format.
 
@@ -161,6 +164,7 @@ def get_history():
         response = stub.Handle(spacex.api.device.device_pb2.Request(get_history={}))
     return response.dish_get_history
 
+
 def history_ping_stats(parse_samples, verbose=False):
     """Fetch, parse, and compute the packet loss stats.
 
@@ -239,7 +243,7 @@ def history_ping_stats(parse_samples, verbose=False):
                 if run_length <= 60:
                     second_runs[run_length - 1] += run_length
                 else:
-                    minute_runs[min((run_length - 1)//60 - 1, 59)] += run_length
+                    minute_runs[min((run_length-1) // 60 - 1, 59)] += run_length
             run_length = 0
         elif init_run_length is None:
             init_run_length = 0
@@ -267,7 +271,7 @@ def history_ping_stats(parse_samples, verbose=False):
         run_length = 0
 
     return {
-        "samples": parse_samples
+        "samples": parse_samples,
     }, {
         "total_ping_drop": tot,
         "count_full_ping_drop": count_full_drop,
@@ -276,10 +280,10 @@ def history_ping_stats(parse_samples, verbose=False):
         "count_full_obstructed_ping_drop": count_full_obstruct,
         "count_unscheduled": count_unsched,
         "total_unscheduled_ping_drop": total_unsched_drop,
-        "count_full_unscheduled_ping_drop": count_full_unsched
+        "count_full_unscheduled_ping_drop": count_full_unsched,
     }, {
         "init_run_fragment": init_run_length,
         "final_run_fragment": run_length,
         "run_seconds": second_runs,
-        "run_minutes": minute_runs
+        "run_minutes": minute_runs,
     }
diff --git a/starlink_json.py b/starlink_json.py
index 7396c5a..7365430 100644
--- a/starlink_json.py
+++ b/starlink_json.py
@@ -28,7 +28,7 @@ def history_ping_field_names():
         stat names.
     """
     return [
-        "samples"
+        "samples",
     ], [
         "total_ping_drop",
         "count_full_ping_drop",
@@ -37,14 +37,15 @@ def history_ping_field_names():
         "count_full_obstructed_ping_drop",
         "count_unscheduled",
         "total_unscheduled_ping_drop",
-        "count_full_unscheduled_ping_drop"
+        "count_full_unscheduled_ping_drop",
     ], [
         "init_run_fragment",
         "final_run_fragment",
         "run_seconds",
-        "run_minutes"
+        "run_minutes",
     ]
 
+
 def get_history(filename):
     """Read JSON data and return the raw history in dict format.
 
@@ -63,6 +64,7 @@ def get_history(filename):
             json_data = json.load(json_file)
     return json_data["dishGetHistory"]
 
+
 def history_ping_stats(filename, parse_samples, verbose=False):
     """Fetch, parse, and compute the packet loss stats.
 
@@ -144,7 +146,7 @@ def history_ping_stats(filename, parse_samples, verbose=False):
                 if run_length <= 60:
                     second_runs[run_length - 1] += run_length
                 else:
-                    minute_runs[min((run_length - 1)//60 - 1, 59)] += run_length
+                    minute_runs[min((run_length-1) // 60 - 1, 59)] += run_length
             run_length = 0
         elif init_run_length is None:
             init_run_length = 0
@@ -172,7 +174,7 @@ def history_ping_stats(filename, parse_samples, verbose=False):
         run_length = 0
 
     return {
-        "samples": parse_samples
+        "samples": parse_samples,
     }, {
         "total_ping_drop": tot,
         "count_full_ping_drop": count_full_drop,
@@ -181,10 +183,10 @@ def history_ping_stats(filename, parse_samples, verbose=False):
         "count_full_obstructed_ping_drop": count_full_obstruct,
         "count_unscheduled": count_unsched,
         "total_unscheduled_ping_drop": total_unsched_drop,
-        "count_full_unscheduled_ping_drop": count_full_unsched
+        "count_full_unscheduled_ping_drop": count_full_unsched,
     }, {
         "init_run_fragment": init_run_length,
         "final_run_fragment": run_length,
         "run_seconds": second_runs,
-        "run_minutes": minute_runs
+        "run_minutes": minute_runs,
     }