Correct stacklevel for check_deprecated_parameters (gradio-app#4203)

Co-authored-by: Abubakar Abid <[email protected]>

CHANGELOG.md

@@ -7,6 +7,7 @@
 
 ## Bug Fixes:
 
+- The deprecation warnings for kwargs now show the actual stack level for the invocation, by [@akx](https://github.com/akx) in [PR 4203](https://github.com/gradio-app/gradio/pull/4203).
 - Fix "TypeError: issubclass() arg 1 must be a class" When use Optional[Types] by [@lingfengchencn](https://github.com/lingfengchencn) in [PR 4200](https://github.com/gradio-app/gradio/pull/4200). 
 
 ## Other Changes:

gradio/blocks.py

@@ -96,7 +96,9 @@ def __init__(
 
         if render:
             self.render()
-        check_deprecated_parameters(self.__class__.__name__, **kwargs)
+        check_deprecated_parameters(
+            self.__class__.__name__, stacklevel=6, kwargs=kwargs
+        )
 
     def render(self):
         """

gradio/deprecation.py

@@ -32,14 +32,15 @@ def use_in_launch(term: str) -> str:
 }
 
 
-def check_deprecated_parameters(cls: str, **kwargs) -> None:
+def check_deprecated_parameters(cls: str, *, stacklevel: int = 2, kwargs) -> None:
     for key, value in DEPRECATION_MESSAGE.items():
         if key in kwargs:
             kwargs.pop(key)
             # Interestingly, using DeprecationWarning causes warning to not appear.
-            warnings.warn(value)
+            warnings.warn(value, stacklevel=stacklevel)
 
-    if len(kwargs) != 0:
+    if kwargs:
         warnings.warn(
-            f"You have unused kwarg parameters in {cls}, please remove them: {kwargs}"
+            f"You have unused kwarg parameters in {cls}, please remove them: {kwargs}",
+            stacklevel=stacklevel,
         )