fix: make deprecated Client initializer backward-compatible

tavily/tavily.py

@@ -746,7 +746,15 @@ class Client(TavilyClient):
     WARNING! This class is deprecated. Please use TavilyClient instead.
     """
 
-    def __init__(self, kwargs):
+    def __init__(self, kwargs=None, **legacy_kwargs):
         warnings.warn("Client is deprecated, please use TavilyClient instead",
                       DeprecationWarning, stacklevel=2)
-        super().__init__(kwargs)
+
+        if isinstance(kwargs, dict):
+            init_kwargs = {**kwargs, **legacy_kwargs}
+        elif kwargs is not None:
+            init_kwargs = {"api_key": kwargs, **legacy_kwargs}
+        else:
+            init_kwargs = legacy_kwargs
+
+        super().__init__(**init_kwargs)

tests/test_errors.py

@@ -51,3 +51,17 @@ def test_invalid_api_key():
     with pytest.raises(InvalidAPIKeyError):
         print(async_tavily.httpx.AsyncClient.post)
         print(asyncio.run(async_tavily.AsyncTavilyClient(api_key="invalid_api_key").search("What is Tavily?")))
+
+
+def test_deprecated_client_accepts_keyword_args():
+    with pytest.warns(DeprecationWarning):
+        client = sync_tavily.Client(api_key="tvly-test")
+    assert client.api_key == "tvly-test"
+    client.close()
+
+
+def test_deprecated_client_accepts_legacy_dict_kwargs():
+    with pytest.warns(DeprecationWarning):
+        client = sync_tavily.Client({"api_key": "tvly-test"})
+    assert client.api_key == "tvly-test"
+    client.close()