From a1b30a5f7e11455fb61d61fcabf4f597ffb0132b Mon Sep 17 00:00:00 2001
From: Nick Hall <nick-h@gramps-project.org>
Date: Thu, 31 Dec 2015 18:03:53 +0000
Subject: [PATCH] 8556: ValueError: underlying buffer has been detached

The expat parser requires a binary mode file object.
---
 gramps/plugins/importer/importxml.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gramps/plugins/importer/importxml.py b/gramps/plugins/importer/importxml.py
index 660aa36ad..0f8b2a59e 100644
--- a/gramps/plugins/importer/importxml.py
+++ b/gramps/plugins/importer/importxml.py
@@ -428,7 +428,7 @@ class ImportOpenFileContextManager:
 
     def __enter__(self):
         if self.filename == '-':
-            self.filehandle = sys.stdin
+            self.filehandle = sys.stdin.buffer
         else:
             self.filehandle = self.open_file(self.filename)
         return self.filehandle