Use black with -l 120 param.

gns3server/controller/ports/serial_port.py

@@ -22,7 +22,6 @@ from .port import Port
 
 
 class SerialPort(Port):
-
     @staticmethod
     def long_name_type():
         """
@@ -61,6 +60,4 @@ class SerialPort(Port):
         :return: dictionary
         """
 
-        return {"Frame Relay": "DLT_FRELAY",
-                "Cisco HDLC": "DLT_C_HDLC",
-                "Cisco PPP": "DLT_PPP_SERIAL"}
+        return {"Frame Relay": "DLT_FRELAY", "Cisco HDLC": "DLT_C_HDLC", "Cisco PPP": "DLT_PPP_SERIAL"}