add timestamp to logfile

api/ble.py

@@ -326,7 +326,8 @@ def test(test_count = 0, bt_usb_id = None) -> None:
 # --------------------------------------------------------------------------- #
 if __name__ == "__main__":
     import json
-    _file_handler = logging.FileHandler("ble-test.log", mode="a")
+    from datetime import datetime
+    _file_handler = logging.FileHandler(f"ble-test-{datetime.now().strftime('%y%m%d-%H%M%S')}.log", mode="a")
     _file_handler.setLevel(logging.INFO)      # same level (or tweak)
     _file_handler.setFormatter(_stdout_handler.formatter)  # reuse formatter
     _logger.addHandler(_file_handler)