Remove old defs cruft.

[joypy/Thun.git] / joy / utils / stack.py

diff --git a/joy/utils/stack.py b/joy/utils/stack.py
index 366d8a4..1e9764f 100644 (file)
--- a/joy/utils/stack.py
+++ b/joy/utils/stack.py
@@ -177,7 +177,7 @@ def concat(quote, expression):
     temp = []
     while quote:
         if not isinstance(quote, tuple):
-            raise NotAListError('Not a list.')
+            raise NotAListError(repr(quote))
         item, quote = quote
         temp.append(item)
     for item in reversed(temp):