From 82328ad1edcec728750817d14132a256333f1802 Mon Sep 17 00:00:00 2001
From: Nate Prewitt <Nate.Prewitt@gmail.com>
Date: Sat, 12 May 2018 08:42:07 -0700
Subject: [PATCH] don't hard fail on warning suppression

---
 flask_common.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/flask_common.py b/flask_common.py
index 673b055..22fd194 100644
--- a/flask_common.py
+++ b/flask_common.py
@@ -9,10 +9,12 @@ from gunicorn.app.base import Application
 from whitenoise import WhiteNoise
 from flask_cache import Cache
 
-import warnings
-from flask.exthook import ExtDeprecationWarning
-
-warnings.simplefilter('ignore', ExtDeprecationWarning)
+try:
+    from flask.exthook import ExtDeprecationWarning
+    import warnings
+    warnings.simplefilter('ignore', ExtDeprecationWarning)
+except ImportError:
+    pass # DeprecationWarning only relevant to Flask<1.0
 
 
 # Find the stack on which we want to store the database connection.