gui: add arg for saving log to a file

pykirdy/kirdy_qt.py

@@ -39,10 +39,8 @@ FLOAT_REGEX = re.compile(r'(?P<number>[+-]?((((\d+(\.\d*)?)|(\d*\.\d+))([eE][+-]
 def get_argparser():
     parser = argparse.ArgumentParser(description="ARTIQ master")
 
-    parser.add_argument("--connect", default=None, action="store_true",
-                        help="Automatically connect to the specified Thermostat in IP:port format")
-    parser.add_argument('IP', metavar="ip", default=None, nargs='?')
-    parser.add_argument('PORT', metavar="port", default=None, nargs='?')
+    parser.add_argument("--log-file", default="", nargs="?",
+                        help="Store logs into a file; Set the base filename")
     parser.add_argument("-l", "--log", dest="logLevel", choices=['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
                         help="Set the logging level")
 
@@ -951,6 +949,17 @@ class MainWindow(QtWidgets.QMainWindow):
 
 async def coro_main():
     args = get_argparser().parse_args()
+    if args.log_file or args.log_file is None:
+        filename = args.log_file
+        if filename is None:
+            time = datetime.now()
+            filename = f"{time.year}-{time.day}-{time.month}-{time.hour}:{time.minute}:{time.second}.log"
+        logging.basicConfig(filename=filename,
+                    filemode='a',
+                    format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s',
+                    datefmt='%Y/%d/%m %H:%M:%S',
+                    level=logging.INFO)
+
     if args.logLevel:
         logging.basicConfig(level=getattr(logging, args.logLevel))