Update error message.

lhongjum · Oct 21, 2021 · c5b9edd · c5b9edd
1 parent 00ba603
commit c5b9edd
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/optuna/cli.py b/optuna/cli.py
@@ -818,7 +818,8 @@ def take_action(self, parsed_args: Namespace) -> None:
         else:
             if parsed_args.sampler_kwargs is not None:
                 raise ValueError(
-                    "`--sampler_kwargs` is set without `--sampler`. Please specify `--sampler` as well."
+                    "`--sampler_kwargs` is set without `--sampler`. Please specify `--sampler` as"
+                    " well or omit `--sampler-kwargs`."
                 )
 
         if parsed_args.search_space is not None:

diff --git a/tests/test_cli.py b/tests/test_cli.py
@@ -1267,7 +1267,7 @@ def test_ask_sampler_kwargs_without_sampler() -> None:
 
         result = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         error_message = result.stderr.decode()
-        assert "`sampler_kwargs` is set without `sampler`." in error_message
+        assert "`--sampler_kwargs` is set without `--sampler`." in error_message
 
 
 def test_tell() -> None: