--- a/tests/md5sum.py	Mon Jan 06 14:15:40 2025 -0500
+++ b/tests/md5sum.py	Sun Jan 05 21:03:17 2025 -0500
@@ -22,7 +22,7 @@
 for filename in sys.argv[1:]:
     try:
         fp = open(filename, 'rb')
-    except IOError as msg:
+    except OSError as msg:
         sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
         sys.exit(1)
 
@@ -30,7 +30,7 @@
     try:
         for data in iter(lambda: fp.read(8192), b''):
             m.update(data)
-    except IOError as msg:
+    except OSError as msg:
         sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
         sys.exit(1)
     sys.stdout.write('%s  %s\n' % (m.hexdigest(), filename))