From 74ee84c9e28d1d41e070383cf1593194e4e4e18d Mon Sep 17 00:00:00 2001
From: Andrew Nelson <andyfaff@gmail.com>
Date: Mon, 3 Aug 2026 18:40:35 +1000
Subject: [PATCH] MAINT: ensure file is closed

---
 orsopy/fileio/base.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/orsopy/fileio/base.py b/orsopy/fileio/base.py
index 5b2ac12..5e302b4 100644
--- a/orsopy/fileio/base.py
+++ b/orsopy/fileio/base.py
@@ -1090,9 +1090,11 @@ def _possibly_open_file(f: Union[TextIO, str], mode: str = "wb") -> Generator[Te
     else:
         g = open(f, mode)
         close_file = True
-    yield g
-    if close_file:
-        g.close()
+    try:
+        yield g
+    finally:
+        if close_file:
+            g.close()
 
 
 def _todict(obj: Any, classkey: Any = None) -> dict: