From 14b4a56bec5034eca657cc6469d0403ace3c5862 Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Sat, 17 Jan 2015 11:22:40 +0100
Subject: [PATCH] Closes #1680: fix botched error check for nonexisting
 environment file

---
 sphinx/application.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/application.py b/sphinx/application.py
index 8012d2409..5e2aa5195 100644
--- a/sphinx/application.py
+++ b/sphinx/application.py
@@ -188,7 +188,7 @@ class Sphinx(object):
                     self.env.domains[domain] = self.domains[domain](self.env)
                 self.info('done')
             except Exception, err:
-                if type(err) is IOError and err.errno == ENOENT:
+                if isinstance(err, IOError) and err.errno == ENOENT:
                     self.info('not yet created')
                 else:
                     self.info('failed: %s' % err)