From 9fbbeb39da425dd5709cdaaf32dad3447a226569 Mon Sep 17 00:00:00 2001
From: Ricardo Lopes <ricardo.lopes@datacamp.com>
Date: Fri, 23 May 2025 14:17:00 +0100
Subject: [PATCH] Fix typed signature validation

---
 pythonwhat/tasks.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pythonwhat/tasks.py b/pythonwhat/tasks.py
index 35c87ac..3516ff7 100644
--- a/pythonwhat/tasks.py
+++ b/pythonwhat/tasks.py
@@ -134,7 +134,8 @@ def get_signature(name, mapped_name, signature, manual_sigs, env):
             except:
                 raise InstructorError.from_message(e.args[0] + " and cannot determine signature")
 
-    return signature
+    params = [param.replace(annotation=inspect._empty) for param in signature.parameters.values()]
+    return signature.replace(parameters=params)
 
 
 # Get the signature of a function based on an object inside the process