Noticed that if debug is enabled ask_for_optional is a required field and will break without it being set
diff --git a/flask_openid.py b/flask_openid.py
index b66ca20..6909d6a 100644
--- a/flask_openid.py
+++ b/flask_openid.py
@@ -515,9 +515,10 @@
for key in ask_for:
if key not in ALL_KEYS:
raise ValueError('invalid key %r' % key)
- for key in ask_for_optional:
- if key not in ALL_KEYS:
- raise ValueError('invalid optional key %r' % key)
+ if ask_for_optional:
+ for key in ask_for_optional:
+ if key not in ALL_KEYS:
+ raise ValueError('invalid optional key %r' % key)
try:
consumer = Consumer(SessionWrapper(self), self.store_factory())
auth_request = consumer.begin(identity_url)
