From 4b63697f9d125fa7187dd53a1d15fd0cd7cef6ff Mon Sep 17 00:00:00 2001
From: Ovank <omvats89@gmail.com>
Date: Sun, 19 May 2024 00:54:20 +0530
Subject: [PATCH] Update ext.py

Fixes issue #45

Code is not equipped to handle scenario when
```shutil.which``` return *None*.
Adding ```TypeError``` Exception to the error handling.
---
 sphinxarg/ext.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinxarg/ext.py b/sphinxarg/ext.py
index 559a6067..cb11b7d4 100644
--- a/sphinxarg/ext.py
+++ b/sphinxarg/ext.py
@@ -445,7 +445,7 @@ def _open_filename(self):
         # try open with shutil which
         try:
             return open(shutil.which(self.options['filename']))
-        except OSError:
+        except (OSError, TypeError):
             pass
         # raise exception
         raise FileNotFoundError(self.options['filename'])