Tidying - ruff and type annotations fix (#25)

* ruff fix

* remove duplicate code block

* cleaner fix for no existing kubeconfig

makes the type annotations true again

Author: dimbleby

src/connectedk8s/azext_connectedk8s/__init__.py

@@ -43,7 +43,7 @@ def load_arguments(self, command: CLICommand) -> None:
 COMMAND_LOADER_CLS = Connectedk8sCommandsLoader
 
 __all__ = [
-    "helps",
-    "Connectedk8sCommandsLoader",
     "COMMAND_LOADER_CLS",
+    "Connectedk8sCommandsLoader",
+    "helps",
 ]

src/connectedk8s/azext_connectedk8s/custom.py

@@ -2289,10 +2289,6 @@ def update_connected_cluster(
     if disable_proxy:
         helm_content_values["global.isProxyEnabled"] = "False"
 
-    # Disable proxy if disable_proxy flag is set
-    if disable_proxy:
-        helm_content_values["global.isProxyEnabled"] = "False"
-
     # Set agent version in registry path
     if connected_cluster.agent_version is not None:
         agent_version = connected_cluster.agent_version  # type: ignore[unreachable]
@@ -3271,7 +3267,7 @@ def disable_cluster_connect(
 def load_kubernetes_configuration(filename: str) -> dict[str, Any]:
     try:
         with open(filename) as stream:
-            k8s_config: dict[str, Any] = yaml.safe_load(stream)
+            k8s_config: dict[str, Any] = yaml.safe_load(stream) or {}
             return k8s_config
     except OSError as ex:
         if getattr(ex, "errno", 0) == errno.ENOENT:
@@ -3372,8 +3368,8 @@ def merge_kubernetes_configurations(
                 break
         except (KeyError, TypeError):
             continue
-    
-    if existing is None:
+
+    if not existing:
         existing = addition
     else:
         handle_merge(existing, addition, "clusters", replace)