add logfile to logging when called as main

api/ble.py

@@ -43,12 +43,18 @@ DISCOVER_TIMEOUT = SCAN_TIMEOUT + 5.0  # Timeout for discovering device
 # --------------------------------------------------------------------------- #
 # Logging
 # --------------------------------------------------------------------------- #
-logging.basicConfig(
+_logger = logging.getLogger(__name__)
-    level=logging.INFO,
+_logger.setLevel(logging.INFO)
-    format="%(asctime)s [%(levelname)s] %(message)s",
+
+# Stream (stdout) handler – always present
+_stdout_handler = logging.StreamHandler(sys.stdout)
+_stdout_handler.setFormatter(
+    logging.Formatter(
+        fmt="%(asctime)s [%(levelname)s] %(message)s",
         datefmt="%H:%M:%S",
     )
-log = logging.getLogger(__name__)
+)
+_logger.addHandler(_stdout_handler)
 
 # --------------------------------------------------------------------------- #
 # Data model
@@ -305,6 +311,10 @@ def test(test_count = 0) -> None:
 if __name__ == "__main__":
     import json
     import sys
+    _file_handler = logging.FileHandler("app.log", mode="a")
+    _file_handler.setLevel(logging.INFO)      # same level (or tweak)
+    _file_handler.setFormatter(_stdout_handler.formatter)  # reuse formatter
+    _logger.addHandler(_file_handler)    
     # 1. Grab the argument (string)
     if len(sys.argv) < 2:
         print("Usage: python3 test.py <count>")
@@ -350,6 +360,9 @@ if __name__ == "__main__":
         result_summary =  " | ".join(parts)
         log.info(f"  {result_summary}")
 
+# finally create the log
+log = _logger
+
 # This is the structure of test_results
 #            [
 #                {