From 974d863fec8451560c7aa31f4751d99779cb4273 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Mon, 7 Nov 2011 10:44:25 -0500
Subject: [PATCH] Issue #13211: Add .reason attribute to HTTPError to implement
 parent class (URLError) interface.

---
 Lib/test/test_urllib2.py | 11 +++++++++++
 Lib/urllib2.py           |  6 ++++++
 2 files changed, 17 insertions(+)

diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
index e2473159dd..7f230e2d4a 100644
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -1318,6 +1318,17 @@ class RequestTests(unittest.TestCase):
         req = Request(url)
         self.assertEqual(req.get_full_url(), url)
 
+def test_HTTPError_interface():
+    """
+    Issue 13211 reveals that HTTPError didn't implement the URLError
+    interface even though HTTPError is a subclass of URLError.
+
+    >>> err = urllib2.HTTPError(msg='something bad happened', url=None, code=None, hdrs=None, fp=None)
+    >>> assert hasattr(err, 'reason')
+    >>> err.reason
+    'something bad happened'
+    """
+
 def test_main(verbose=None):
     from test import test_urllib2
     test_support.run_doctest(test_urllib2, verbose)
diff --git a/Lib/urllib2.py b/Lib/urllib2.py
index a0065b5b84..5471acd403 100644
--- a/Lib/urllib2.py
+++ b/Lib/urllib2.py
@@ -166,6 +166,12 @@ class HTTPError(URLError, addinfourl):
     def __str__(self):
         return 'HTTP Error %s: %s' % (self.code, self.msg)
 
+    # since URLError specifies a .reason attribute, HTTPError should also
+    #  provide this attribute. See issue13211 fo discussion.
+    @property
+    def reason(self):
+        return self.msg
+
 # copied from cookielib.py
 _cut_port_re = re.compile(r":\d+$")
 def request_host(request):
-- 
2.50.1