From e3c35a8285af3aae5e5a18327c06bba2c7664363 2023-10-17 20:12:05
From: Zoltan Farkas <zfarkas@fb.com>
Date: 2023-10-17 20:12:05
Subject: [PATCH] [fix] do not call signature(obj) for non-callables. signature, will check and raise a exception where the message will contain obj.__repr__ and that can be very expensive on certain objects.

---

diff --git a/IPython/core/oinspect.py b/IPython/core/oinspect.py
index ef6a0d0..82a5666 100644
--- a/IPython/core/oinspect.py
+++ b/IPython/core/oinspect.py
@@ -416,6 +416,8 @@ class Inspector(Colorable):
 
         If any exception is generated, None is returned instead and the
         exception is suppressed."""
+        if not callable(obj):
+            return None        
         try:
             return _render_signature(signature(obj), oname)
         except: