diff --git a/covalent/_shared_files/config.py b/covalent/_shared_files/config.py
index 3bc9c16bb..73e0d90b7 100644
--- a/covalent/_shared_files/config.py
+++ b/covalent/_shared_files/config.py
@@ -50,7 +50,7 @@ def __init__(self) -> None:
         self.generate_default_config()
 
         try:
-            with open(self.config_file, "r") as f:
+            with open(self.config_file, "r"):
                 pass
 
             self.update_config()
diff --git a/covalent/_workflow/depsbash.py b/covalent/_workflow/depsbash.py
index 1bef3a84e..4b8464342 100644
--- a/covalent/_workflow/depsbash.py
+++ b/covalent/_workflow/depsbash.py
@@ -28,7 +28,7 @@
 
 def apply_bash_commands(commands):
     for cmd in commands:
-        proc = subprocess.run(
+        subprocess.run(
             cmd, stdin=subprocess.DEVNULL, shell=True, capture_output=True, check=True, text=True
         )
 
diff --git a/covalent/executor/base.py b/covalent/executor/base.py
index e46f6590b..9f0d226fd 100644
--- a/covalent/executor/base.py
+++ b/covalent/executor/base.py
@@ -381,8 +381,8 @@ def execute(
             output: The result of the function execution.
         """
 
-        dispatch_info = DispatchInfo(dispatch_id)
-        fn_version = function.args[0].python_version
+        DispatchInfo(dispatch_id)
+        function.args[0].python_version
         self._task_stdout = io.StringIO()
         self._task_stderr = io.StringIO()
 
@@ -396,10 +396,10 @@ def execute(
             self.setup(task_metadata=task_metadata)
             result = self.run(function, args, kwargs, task_metadata)
             job_status = RESULT_STATUS.COMPLETED
-        except TaskRuntimeError as err:
+        except TaskRuntimeError:
             job_status = RESULT_STATUS.FAILED
             result = None
-        except TaskCancelledError as err:
+        except TaskCancelledError:
             job_status = RESULT_STATUS.CANCELLED
             result = None
         finally:
@@ -655,10 +655,10 @@ async def execute(
             await self.setup(task_metadata=task_metadata)
             result = await self.run(function, args, kwargs, task_metadata)
             job_status = RESULT_STATUS.COMPLETED
-        except TaskCancelledError as err:
+        except TaskCancelledError:
             job_status = RESULT_STATUS.CANCELLED
             result = None
-        except TaskRuntimeError as err:
+        except TaskRuntimeError:
             job_status = RESULT_STATUS.FAILED
             result = None
         finally:
diff --git a/covalent/executor/executor_plugins/dask.py b/covalent/executor/executor_plugins/dask.py
index 8347619ff..288a06173 100644
--- a/covalent/executor/executor_plugins/dask.py
+++ b/covalent/executor/executor_plugins/dask.py
@@ -98,7 +98,7 @@ def __init__(
         if not scheduler_address:
             try:
                 scheduler_address = get_config("dask.scheduler_address")
-            except KeyError as ex:
+            except KeyError:
                 app_log.debug(
                     "No dask scheduler address found in config. Address must be set manually."
                 )
diff --git a/covalent_dispatcher/_cli/service.py b/covalent_dispatcher/_cli/service.py
index 8645d88cb..c546b34b0 100644
--- a/covalent_dispatcher/_cli/service.py
+++ b/covalent_dispatcher/_cli/service.py
@@ -244,7 +244,7 @@ def _graceful_start(
         try:
             requests.get(dispatcher_addr, timeout=1)
             up = True
-        except requests.exceptions.ConnectionError as err:
+        except requests.exceptions.ConnectionError:
             time.sleep(1)
 
     Path(get_config("dispatcher.cache_dir")).mkdir(parents=True, exist_ok=True)
@@ -649,7 +649,7 @@ def status() -> None:
     try:
         response = requests.get(f"http://localhost:{port}/api/triggers/status", timeout=1)
         trigger_status = response.json()["status"]
-    except requests.exceptions.ConnectionError as err:
+    except requests.exceptions.ConnectionError:
         trigger_status = "stopped"
 
     if trigger_status == "running":
diff --git a/covalent_ui/api/v1/data_layer/summary_dal.py b/covalent_ui/api/v1/data_layer/summary_dal.py
index 04bbcd239..c1938f25c 100644
--- a/covalent_ui/api/v1/data_layer/summary_dal.py
+++ b/covalent_ui/api/v1/data_layer/summary_dal.py
@@ -62,7 +62,6 @@ def get_summary(
         Return:
             List of top most Lattices and count
         """
-        result = None
 
         status_filters = self.get_filters(status_filter)
 
diff --git a/tests/covalent_dispatcher_tests/_cli/groups/db_test.py b/tests/covalent_dispatcher_tests/_cli/groups/db_test.py
index c8464424c..935b9c514 100644
--- a/tests/covalent_dispatcher_tests/_cli/groups/db_test.py
+++ b/tests/covalent_dispatcher_tests/_cli/groups/db_test.py
@@ -40,7 +40,7 @@ def test_migration_success(mocker):
     runner = CliRunner()
     db_mock = Mock()
     mocker.patch.object(DataStore, "factory", lambda: db_mock)
-    res = runner.invoke(migrate, catch_exceptions=False)
+    runner.invoke(migrate, catch_exceptions=False)
     db_mock.run_migrations.assert_called_once()