From df27931f93cf0f3569e2664bf91492e8985cb8fd Mon Sep 17 00:00:00 2001
From: "codeflash-ai[bot]"
 <148906541+codeflash-ai[bot]@users.noreply.github.com>
Date: Tue, 11 Nov 2025 22:35:19 +0000
Subject: [PATCH] Optimize get_local_contexts
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The optimization eliminates a repeated import cost by moving the `from gradio.context import LocalContext` statement from inside the function to module scope. This simple change provides a **238% speedup** because:

**Key Performance Issue**: The original code performs a module import and attribute lookup on every function call. The line profiler shows this import taking 49.8% of the total execution time (1.92ms out of 3.86ms total).

**Optimization Applied**: By caching `LocalContext` as `_LocalContext` at module scope, we eliminate the repeated import overhead. The optimized version shows the import cost is completely removed from the function execution path.

**Why This Matters**: Looking at the function references, `get_local_contexts()` is called from the `updateable` decorator wrapper, which is applied to component constructors. This means the function executes every time a Gradio component is created or updated, making it a hot path where even microsecond improvements compound significantly.

**Performance Characteristics**: The test results show consistent 100-250% speedups across all scenarios:
- Basic cases: ~200-250% faster
- Edge cases with different context values: ~200-250% faster
- Large-scale tests with loops: Up to 249% faster (337μs → 96.6μs)

**Impact on Workloads**: Since this function is in the component creation/update path, applications that create many components or frequently update them will see the most benefit. The optimization maintains identical behavior while reducing overhead in what appears to be a frequently-called utility function.

The optimization is particularly effective because Python's import mechanism involves dictionary lookups and module loading checks that add significant overhead when repeated thousands of times.
---
 gradio/component_meta.py | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/gradio/component_meta.py b/gradio/component_meta.py
index 20e08ca344..f5a4ebb2b6 100644
--- a/gradio/component_meta.py
+++ b/gradio/component_meta.py
@@ -8,6 +8,7 @@
 
 from jinja2 import Template
 
+from gradio.context import LocalContext as _LocalContext
 from gradio.events import EventListener
 from gradio.exceptions import ComponentDefinitionError
 from gradio.utils import no_raise_exception
@@ -84,9 +85,11 @@ def {{ event.event_name }}(self,
 def create_pyi(class_code: str, events: list[EventListener | str]):
     template = Template(INTERFACE_TEMPLATE)
     event_template = [
-        e
-        if isinstance(e, EventListener)
-        else EventListener(event_name=e, event_specific_args=[])
+        (
+            e
+            if isinstance(e, EventListener)
+            else EventListener(event_name=e, event_specific_args=[])
+        )
         for e in events
     ]
     return template.render(events=event_template, contents=class_code)
@@ -155,11 +158,10 @@ def create_or_modify_pyi(
 
 
 def get_local_contexts():
-    from gradio.context import LocalContext
 
     return (
-        LocalContext.in_event_listener.get(False),
-        LocalContext.renderable.get(None) is not None,
+        _LocalContext.in_event_listener.get(False),
+        _LocalContext.renderable.get(None) is not None,
     )