From: Raymond Hettinger <python@rcn.com>
Date: Sun, 6 Oct 2002 03:18:34 +0000 (+0000)
Subject: Backport 1.17:
X-Git-Tag: v2.2.2b1~43
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65e03cd7b86387fc92f5c8375e3f169b27364109;p=thirdparty%2FPython%2Fcpython.git

Backport 1.17:

Ignore IOError exceptions when writing the message.
---

diff --git a/Lib/warnings.py b/Lib/warnings.py
index 1e94f59da31e..cdc290e52661 100644
--- a/Lib/warnings.py
+++ b/Lib/warnings.py
@@ -98,7 +98,10 @@ def showwarning(message, category, filename, lineno, file=None):
     """Hook to write a warning to a file; replace if you like."""
     if file is None:
         file = sys.stderr
-    file.write(formatwarning(message, category, filename, lineno))
+    try:
+        file.write(formatwarning(message, category, filename, lineno))
+    except IOError:
+        pass # the file (probably stderr) is invalid - this warning gets lost.
 
 def formatwarning(message, category, filename, lineno):
     """Function to format a warning the standard way."""