Patch #1682205: a TypeError while unpacking an iterable is no longer
masked by a generic one with the message "unpack non-sequence".
diff --git a/Lib/test/test_unpack.py b/Lib/test/test_unpack.py
index 3f72648..76a4822 100644
--- a/Lib/test/test_unpack.py
+++ b/Lib/test/test_unpack.py
@@ -55,7 +55,7 @@
     >>> a, b, c = 7
     Traceback (most recent call last):
       ...
-    TypeError: unpack non-sequence
+    TypeError: 'int' object is not iterable
 
 Unpacking tuple of wrong size