added try except block in state.py (#5790)

* added try except block in `state.py`

added try except block in `state.py` which will raise a "ValueError"

* add changeset

* updated `state.py` and added test for deepcopy

updated `state.py` and added test for deepcopy named test_initial_value_deepcopy in `test/test_components.py`

* lint

* test fix

* explain test

---------

Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>

.changeset/hot-ducks-end.md

@@ -0,0 +1,5 @@
+---
+"gradio": patch
+---
+
+fix:added try except block in `state.py`

gradio/components/state.py

@@ -37,7 +37,13 @@ class State(IOComponent, SimpleSerializable):
             value: the initial value (of arbitrary type) of the state. The provided argument is deepcopied. If a callable is provided, the function will be called whenever the app loads to set the initial value of the state.
         """
         self.stateful = True
-        IOComponent.__init__(self, value=deepcopy(value), **kwargs)
+        try:
+            self.value = deepcopy(value)
+        except TypeError as err:
+            raise TypeError(
+                f"The initial value of `gr.State` must be able to be deepcopied. The initial value of type {type(value)} cannot be deepcopied."
+            ) from err
+        IOComponent.__init__(self, value=self.value, **kwargs)
 
 
 class Variable(State):

test/test_components.py

@@ -2417,6 +2417,10 @@ class TestState:
         assert state.preprocess("abc") == "abc"
         assert state.stateful
 
+    def test_initial_value_deepcopy(self):
+        with pytest.raises(TypeError):
+            gr.State(value=gr)  # modules are not deepcopyable
+
     @pytest.mark.asyncio
     async def test_in_interface(self):
         def test(x, y=" def"):