Fix view_api bug where unnamed rotes where showing api_name instead of fn_index (#3972)

* Fix view_api bug

* Add to changelog

* Rework test

client/python/CHANGELOG.md

@@ -2,11 +2,11 @@
 
 ## New Features:
 
-- Progress Updates from `gr.Progress()` can be accessed via `job.status().progress_data` by @freddyaboulton](https://github.com/freddyaboulton) in [PR 3924](https://github.com/gradio-app/gradio/pull/3924)
+- Progress Updates from `gr.Progress()` can be accessed via `job.status().progress_data` by [@freddyaboulton](https://github.com/freddyaboulton) in [PR 3924](https://github.com/gradio-app/gradio/pull/3924)
 
 ## Bug Fixes:
 
-No changes to highlight.
+- Fixed bug where unnamed routes where displayed with `api_name` instead of `fn_index` in `view_api` by [@freddyaboulton](https://github.com/freddyaboulton) in [PR 3972](https://github.com/gradio-app/gradio/pull/3972)
 
 ## Documentation Changes:
 

client/python/gradio_client/client.py

@@ -415,7 +415,6 @@ class Client:
                 info = fetch.json()["api"]
             else:
                 raise ValueError(f"Could not fetch api info for {self.src}")
-
         num_named_endpoints = len(info["named_endpoints"])
         num_unnamed_endpoints = len(info["unnamed_endpoints"])
         if num_named_endpoints == 0 and all_endpoints is None:
@@ -430,7 +429,9 @@ class Client:
         if all_endpoints:
             human_info += f"\nUnnamed API endpoints: {num_unnamed_endpoints}\n"
             for fn_index, endpoint_info in info["unnamed_endpoints"].items():
-                human_info += self._render_endpoints_info(fn_index, endpoint_info)
+                # When loading from json, the fn_indices are read as strings
+                # because json keys can only be strings
+                human_info += self._render_endpoints_info(int(fn_index), endpoint_info)
         else:
             if num_unnamed_endpoints > 0:
                 human_info += f"\nUnnamed API endpoints: {num_unnamed_endpoints}, to view, run Client.view_api(`all_endpoints=True`)\n"

client/python/test/test_client.py

@@ -667,6 +667,13 @@ class TestAPIInfo:
             "unnamed_endpoints": {},
         }
 
+    def test_unnamed_endpoints_use_fn_index(self, count_generator_demo):
+        # This demo has no api_name
+        with connect(count_generator_demo) as client:
+            info = client.view_api(return_format="str")
+            assert "fn_index=0" in info
+            assert "api_name" not in info
+
 
 class TestEndpoints:
     def test_upload(self):