python ducklake client arg fix

python-client/wmill/wmill/client.py

@@ -1699,12 +1699,12 @@ class DucklakeClient:
     def __init__(self, client: Windmill, name: str):
         self.client = client
         self.name = name
-    def fetch(self, sql: str, *args):
+    def fetch(self, sql: str, **kwargs):
         args_dict = {}
         args_def = ""
-        for i, arg in enumerate(args):
-            args_dict[f"arg{i+1}"] = arg
-            args_def += f"-- $arg{i+1}\n"
+        for key, value in kwargs.items():
+            args_dict[key] = value
+            args_def += f"-- ${key}\n"
         attach = f"ATTACH 'ducklake://{self.name}' AS dl;USE dl;\n"
         sql = args_def + attach + sql
         return self.client.run_inline_script_preview(