Disable debug when FLASK_DEBUG=False (#2155)

Convert FLASK_DEBUG envvar to lower before test if in tuple
8 years ago · 3fc8be5a4e
1 changed files with 1 additions and 1 deletions
--- a/flask/helpers.py
+++ b/flask/helpers.py
@ -58,7 +58,7 @@ def get_debug_flag(default=None):
    val = os.environ.get('FLASK_DEBUG')
    if not val:
        return default
-    return val not in ('0', 'false', 'no')
+    return val.lower() not in ('0', 'false', 'no')
 def _endpoint_from_view_func(view_func):