ensure Frame proxy to dict

Author: Carreau

ipykernel/embed.py

@@ -49,7 +49,7 @@ def embed_kernel(module=None, local_ns=None, **kwargs):
     if module is None:
         module = caller_module
     if local_ns is None:
-        local_ns = caller_locals
+        local_ns = dict(**caller_locals)
 
     app.kernel.user_module = module
     assert isinstance(local_ns, dict)