make printing the error message from a gr.Error to the console configurable (#10158)

* make print_exc error configurable

* add changeset

* tweak

* tweak

* review: update traceback printing in queuing and utils

---------

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

.changeset/rotten-drinks-push.md

@@ -0,0 +1,5 @@
+---
+"gradio": minor
+---
+
+feat:make printing the error message from a `gr.Error` to the console configurable

gradio/exceptions.py

@@ -81,6 +81,7 @@ class Error(Exception):
         duration: float | None = 10,
         visible: bool = True,
         title: str = "Error",
+        print_exception: bool = True,
     ):
         """
         Parameters:
@@ -88,11 +89,13 @@ class Error(Exception):
             duration: The duration in seconds to display the error message. If None or 0, the error message will be displayed until the user closes it.
             visible: Whether the error message should be displayed in the UI.
             title: The title to be displayed to the user at the top of the error modal.
+            print_exception: Whether to print traceback of the error to the console when the error is raised.
         """
         self.title = title
         self.message = message
         self.duration = duration
         self.visible = visible
+        self.print_exception = print_exception
         super().__init__(self.message)
 
     def __str__(self):

gradio/queueing.py

@@ -17,6 +17,7 @@ from gradio import route_utils, routes
 from gradio.data_classes import (
     PredictBodyInternal,
 )
+from gradio.exceptions import Error
 from gradio.helpers import TrackedIterable
 from gradio.route_utils import API_PREFIX
 from gradio.server_messages import (
@@ -637,7 +638,8 @@ class Queue:
                         response["is_generating"] = not event.is_finished
 
             except Exception as e:
-                traceback.print_exc()
+                if not isinstance(e, Error) or e.print_exception:
+                    traceback.print_exc()
                 response = None
                 err = e
                 for event in awake_events:
@@ -722,7 +724,8 @@ class Queue:
                             if event.streaming:
                                 response["is_generating"] = not event.is_finished
                     except Exception as e:
-                        traceback.print_exc()
+                        if not isinstance(e, Error) or e.print_exception:
+                            traceback.print_exc()
                         response = None
                         err = e
 
@@ -764,7 +767,8 @@ class Queue:
                 for event in events:
                     self.event_analytics[event._id]["process_time"] = duration
         except Exception as e:
-            traceback.print_exc()
+            if not isinstance(e, Error) or e.print_exception:
+                traceback.print_exc()
         finally:
             event_queue = self.event_queue_per_concurrency_id[events[0].concurrency_id]
             event_queue.current_concurrency -= 1

gradio/routes.py

@@ -76,7 +76,7 @@ from gradio.data_classes import (
     SimplePredictBody,
     UserProvidedPath,
 )
-from gradio.exceptions import InvalidPathError
+from gradio.exceptions import Error, InvalidPathError
 from gradio.node_server import (
     start_node_server,
 )
@@ -998,7 +998,8 @@ class App(FastAPI):
                 )
             except BaseException as error:
                 content = utils.error_payload(error, app.get_blocks().show_error)
-                traceback.print_exc()
+                if not isinstance(error, Error) or error.print_exception:
+                    traceback.print_exc()
                 return JSONResponse(
                     content=content,
                     status_code=500,

gradio/utils.py

@@ -312,11 +312,12 @@ def watchfn(reloader: SourceFileReloader):
                     str(reloader.demo_file)
                 )
                 exec(changed_demo_file, module.__dict__)
-            except Exception:
+            except Exception as error:
                 print(
                     f"Reloading {reloader.watch_module_name} failed with the following exception: "
                 )
-                traceback.print_exc()
+                if not isinstance(error, Error) or error.print_exception:
+                    traceback.print_exc()
                 mtimes = {}
                 reloader.alert_change("error")
                 reloader.app.reload_error_message = traceback.format_exc()