allow for trailing comma in model_args

lm_eval/utils.py

@@ -54,7 +54,7 @@ def simple_parse_args_string(args_string):
     args_string = args_string.strip()
     if not args_string:
         return {}
-    arg_list = args_string.split(",")
+    arg_list = [arg for arg in args_string.split(",") if arg]
     args_dict = {k: v for k, v in [arg.split("=") for arg in arg_list]}
     return args_dict