auto-generate output filename if not given as argument

Config_builder.py

@@ -9,7 +9,9 @@ try:
 except ImportError:
     from yaml import Loader
 
-def main(template_filepath,input_filepath,output_filepath):
+def main(args: list) -> None:
+    template_filepath = args.template
+    input_filepath = args.input
     
     with open(input_filepath, 'r') as file:
         input_devices = file.read()
@@ -25,6 +27,11 @@ def main(template_filepath,input_filepath,output_filepath):
         print('{} is not a valid JSON format!\n'.format(input_filepath))
         return 406
     
+    if args.output is not None:
+        output_filepath = args.output
+    else:
+        output_filepath = './output/{}.nso.config'.format(device_info["device"])
+
     
     template_path = os.path.dirname(os.path.abspath(template_filepath))
     template_filename = os.path.basename(template_filepath)
@@ -58,8 +65,6 @@ def main(template_filepath,input_filepath,output_filepath):
                 
     #     print('{}\n'.format(content))
     #     output.write('{}\n'.format(content))
-    
-    return 0
 
 if __name__ == "__main__":
 
@@ -79,14 +84,14 @@ if __name__ == "__main__":
 
     parser.add_argument('-output',
                         help='Output File',
-                        required=True
+                        required=False
                         )
 
     custom_args = parser.parse_known_args()[0]
     
-    template = custom_args.template
-    input = custom_args.input
-    output = custom_args.output
-        
-    main(template,input,output)
+    #template = custom_args.template
+    #input = custom_args.input
+    #output = custom_args.output
+    
+    main(custom_args)