diff --git a/scripts/lib/pythonrc.py b/scripts/lib/pythonrc.py
index 2aebdc52f3..2b5e4a9a16 100644
--- a/scripts/lib/pythonrc.py
+++ b/scripts/lib/pythonrc.py
@@ -1,8 +1,8 @@
 try:
-    from django.conf import settings
-    from zerver.models import *
-    from zerver.lib.actions import *
-    from analytics.models import *
+    from django.conf import settings  # noqa: F401
+    from zerver.models import *  # noqa: F401, F403
+    from zerver.lib.actions import *  # noqa: F401, F403
+    from analytics.models import *  # noqa: F401, F403
 except Exception:
     import traceback
     print("\nException importing Zulip core modules on startup!")
diff --git a/zproject/configured_settings.py b/zproject/configured_settings.py
index 4dd12cf9e1..10997c8193 100644
--- a/zproject/configured_settings.py
+++ b/zproject/configured_settings.py
@@ -5,18 +5,18 @@
 # For any settings that are not set in the site-specific configuration file
 # (/etc/zulip/settings.py in production, or dev_settings.py or test_settings.py
 # in dev and test), we want to initialize them to sane defaults.
-from .default_settings import *  # isort: skip
+from .default_settings import *  # noqa: F401,F403 isort: skip
 
 # Import variables like secrets from the prod_settings file
 # Import prod_settings after determining the deployment/machine type
 from .config import PRODUCTION
 if PRODUCTION:
-    from .prod_settings import *  # isort: skip
+    from .prod_settings import *  # noqa: F401,F403 isort: skip
 else:
     # For the Dev VM environment, we use the same settings as the
     # sample prod_settings.py file, with a few exceptions.
-    from .prod_settings_template import *  # isort: skip
-    from .dev_settings import *  # isort: skip
+    from .prod_settings_template import *  # noqa: F401,F403 isort: skip
+    from .dev_settings import *  # noqa: F401,F403 isort: skip
 
 # Do not add any code after these wildcard imports!  Add it to
 # computed_settings instead.
diff --git a/zproject/settings.py b/zproject/settings.py
index 4ff66c6d64..0e85bef312 100644
--- a/zproject/settings.py
+++ b/zproject/settings.py
@@ -16,8 +16,8 @@
 #
 ########################################################################
 
-from .configured_settings import *  # isort: skip
-from .computed_settings import *  # isort: skip
+from .configured_settings import *  # noqa: F401,F403 isort: skip
+from .computed_settings import *  # noqa: F401,F403 isort: skip
 
 # Do not add any code after these wildcard imports!  Add it to
 # computed_settings instead.
diff --git a/zproject/test_settings.py b/zproject/test_settings.py
index fbe43fbc0b..28522199e6 100644
--- a/zproject/test_settings.py
+++ b/zproject/test_settings.py
@@ -17,8 +17,8 @@ import os
 if os.getenv("EXTERNAL_HOST") is None:
     os.environ["EXTERNAL_HOST"] = "testserver"
 
-from .settings import *  # isort: skip
-from .test_extra_settings import *  # isort: skip
+from .settings import *  # noqa: F401,F403 isort: skip
+from .test_extra_settings import *  # noqa: F401,F403 isort: skip
 
 # Do not add any code after these wildcard imports!  Add it to
 # test_extra_settings instead.