Always return a list from get_flashed_messages

12 years ago · 404265110a
1 changed files with 1 additions and 1 deletions
--- a/flask/helpers.py
+++ b/flask/helpers.py
@ -398,7 +398,7 @@ def get_flashed_messages(with_categories=False, category_filter=[]):
        _request_ctx_stack.top.flashes = flashes = session.pop('_flashes') \
            if '_flashes' in session else []
    if category_filter:
-        flashes = filter(lambda f: f[0] in category_filter, flashes)
+        flashes = list(filter(lambda f: f[0] in category_filter, flashes))
    if not with_categories:
        return [x[1] for x in flashes]
    return flashes