Fix setuptools attr: error

optuna_dashboard/__init__.py

@@ -1,2 +1,5 @@
 from .app import run_server  # noqa
 from .app import wsgi  # noqa
+
+
+__version__ = "0.5.0"

optuna_dashboard/cli.py

@@ -6,8 +6,8 @@ from optuna.storages import BaseStorage
 from optuna.storages import RDBStorage
 from optuna.storages import RedisStorage
 
+from . import __version__
 from .app import create_app
-from .version import __version__
 
 
 AUTO_RELOAD = os.environ.get("OPTUNA_DASHBOARD_AUTO_RELOAD") == "1"

optuna_dashboard/version.py

@@ -1 +0,0 @@
-__version__ = "0.5.0"

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = optuna-dashboard
-version = attr: optuna_dashboard.version.__version__
+version = attr: optuna_dashboard.__version__
 
 url = https://github.com/optuna/optuna-dashboard
 author = Masashi Shibata