Document required signature of before_first_request-decorated functions

pallets · Feb 5, 2015 · fe6bcff · fe6bcff
1 parent 6a25246
commit fe6bcff
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/flask/app.py b/flask/app.py
@@ -1258,6 +1258,9 @@ def before_first_request(self, f):
         """Registers a function to be run before the first request to this
         instance of the application.
 
+        The function will be called without any arguments and its return
+        value is ignored.
+
         .. versionadded:: 0.8
         """
         self.before_first_request_funcs.append(f)