Only return a path if the cacert.pem file exists.

This will permit the deletion of just that one file in order
to fall back to the [probably more accurate but less consistent]
Distro provided CA certs.

diff --git a/requests/utils.py b/requests/utils.py
index b3d33f4fbc2dbe9c7591db0fc8fd82a424fda57f..fd96d28b5ed4cd1e8a55d557c0836fcedaf5cd02 100644 (file)
--- a/requests/utils.py
+++ b/requests/utils.py
@@ -29,7 +29,9 @@ CERTIFI_BUNDLE_PATH = None
 try:
     # see if requests's own CA certificate bundle is installed
     from . import certs
-    CERTIFI_BUNDLE_PATH = certs.where()
+    path = certs.where()
+    if os.path.exists(path):
+        CERTIFI_BUNDLE_PATH = certs.where()
 except ImportError:
     pass