Fix PyLint: Consider explicitly re-raising

platformio/device/list/util.py

@@ -28,8 +28,8 @@ def list_serial_ports(filter_hwid=False, as_objects=False):
     try:
         # pylint: disable=import-outside-toplevel
         from serial.tools.list_ports import comports
-    except ImportError:
-        raise exception.GetSerialPortsError(os.name)
+    except ImportError as exc:
+        raise exception.GetSerialPortsError(os.name) from exc
 
     if as_objects:
         return comports()

platformio/device/monitor/terminal.py

@@ -137,9 +137,9 @@ def new_serial_instance(options):  # pylint: disable=too-many-branches
         if port is None or port == "-":
             try:
                 port = miniterm.ask_for_port()
-            except KeyboardInterrupt:
+            except KeyboardInterrupt as exc:
                 click.echo("", err=True)
-                raise UserSideException("User aborted and port is not given")
+                raise UserSideException("User aborted and port is not given") from exc
             else:
                 if not port:
                     raise UserSideException("Port is not given")
@@ -180,6 +180,6 @@ def new_serial_instance(options):  # pylint: disable=too-many-branches
 
             serial_instance.open()
         except serial.SerialException as exc:
-            raise UserSideException(exc)
+            raise UserSideException(exc) from exc
 
     return serial_instance