style: introduce ruff as linter and formatter (#1356)

* style: remove necessary imports

* style: fix F841

* style: fix F401

* style: fix F811

* style: fix E402

* style: fix E721

* style: fix E722

* style: fix E722

* style: fix F541

* style: ruff format

* style: all passed

* style: add ruff in deps

* style: more ignores in ruff.toml

* style: add pre-commit

pkg/command/operators/version.py

@@ -2,26 +2,20 @@ from __future__ import annotations
 
 import typing
 
-from .. import operator, cmdmgr, entities, errors
+from .. import operator, entities
 
 
-@operator.operator_class(
-    name="version",
-    help="显示版本信息",
-    usage='!version'
-)
+@operator.operator_class(name='version', help='显示版本信息', usage='!version')
 class VersionCommand(operator.CommandOperator):
-
     async def execute(
-        self,
-        context: entities.ExecuteContext
+        self, context: entities.ExecuteContext
     ) -> typing.AsyncGenerator[entities.CommandReturn, None]:
-        reply_str = f"当前版本: \n{self.ap.ver_mgr.get_current_version()}"
+        reply_str = f'当前版本: \n{self.ap.ver_mgr.get_current_version()}'
 
         try:
             if await self.ap.ver_mgr.is_new_version_available():
-                reply_str += "\n\n有新版本可用。"
-        except:
+                reply_str += '\n\n有新版本可用。'
+        except Exception:
             pass
 
-        yield entities.CommandReturn(text=reply_str.strip())
+        yield entities.CommandReturn(text=reply_str.strip())