Enable gradio to work on kaggle (#3101)

* enable share kaggle

* Add test

* CHANGELOG

* Add image to changelog

CHANGELOG.md

@@ -12,6 +12,14 @@ Previously photos uploaded via iOS would be rotated after processing. This has b
 #### After
 ![image](https://user-images.githubusercontent.com/41651716/215846554-e41773ed-70f0-491a-9952-6a18babf91ef.png)
 
+### Run on Kaggle kernels 🧪
+
+A share link will automatically be created when running on Kaggle kernels (notebooks) so that
+the front-end is properly displayed. 
+
+![image](https://user-images.githubusercontent.com/41651716/216104254-2cf55599-449c-436c-b57e-40f6a83f9eee.png)
+
+By [@freddyaboulton](https://github.com/freddyaboulton) in [PR 3101](https://github.com/gradio-app/gradio/pull/3101)
 
 ## Bug Fixes:
 - Fix change event listener for JSON, HighlightedText, Chatbot by [@aliabid94](https://github.com/aliabid94) in [PR 3095](https://github.com/gradio-app/gradio/pull/3095)

gradio/blocks.py

@@ -1383,6 +1383,7 @@ class Blocks(BlockContext):
             self.server = server
             self.is_running = True
             self.is_colab = utils.colab_check()
+            self.is_kaggle = utils.kaggle_check()
             self.protocol = (
                 "https"
                 if self.local_url.startswith("https") or self.is_colab
@@ -1405,7 +1406,7 @@ class Blocks(BlockContext):
             share
             if share is not None
             else True
-            if self.is_colab and self.enable_queue
+            if (self.is_colab and self.enable_queue) or self.is_kaggle
             else False
         )
 

gradio/utils.py

@@ -189,6 +189,12 @@ def colab_check() -> bool:
     return is_colab
 
 
+def kaggle_check() -> bool:
+    return bool(
+        os.environ.get("KAGGLE_KERNEL_RUN_TYPE") or os.environ.get("GFOOTBALL_DATA_DIR")
+    )
+
+
 def ipython_check() -> bool:
     """
     Check if interface is launching from iPython (not colab)

test/test_utils.py

@@ -29,6 +29,7 @@ from gradio.utils import (
     format_ner_list,
     get_local_ip_address,
     ipython_check,
+    kaggle_check,
     launch_analytics,
     readme_to_html,
     sanitize_list_for_csv,
@@ -103,6 +104,31 @@ class TestUtils:
     def test_readme_to_html_correct_parse(self):
         readme_to_html("https://github.com/gradio-app/gradio/blob/master/README.md")
 
+    def test_kaggle_check_false(self):
+        assert not kaggle_check()
+
+    def test_kaggle_check_true_when_run_type_set(self):
+        with mock.patch.dict(
+            os.environ, {"KAGGLE_KERNEL_RUN_TYPE": "Interactive"}, clear=True
+        ):
+            assert kaggle_check()
+
+    def test_kaggle_check_true_when_both_set(self):
+        with mock.patch.dict(
+            os.environ,
+            {"KAGGLE_KERNEL_RUN_TYPE": "Interactive", "GFOOTBALL_DATA_DIR": "./"},
+            clear=True,
+        ):
+            assert kaggle_check()
+
+    def test_kaggle_check_false_when_neither_set(self):
+        with mock.patch.dict(
+            os.environ,
+            {"KAGGLE_KERNEL_RUN_TYPE": "", "GFOOTBALL_DATA_DIR": ""},
+            clear=True,
+        ):
+            assert not kaggle_check()
+
 
 class TestIPAddress:
     @pytest.mark.flaky