Don't emit 'unbalanced-tuple-unpacking' when the rhs of the assignment is a variable length argument. Closes issue #329.

1 files changed, 5 insertions, 0 deletions

diff --git a/checkers/variables.py b/checkers/variables.py
index df39f1015..8bd05b329 100644
--- a/checkers/variables.py
+++ b/checkers/variables.py
@@ -911,6 +911,11 @@ builtins. Remember that you should avoid to define new builtins when possible.'
         """
         if infered is astroid.YES:
             return
+        if (isinstance(infered.parent, astroid.Arguments) and
+                isinstance(node.value, astroid.Name) and
+                node.value.name == infered.parent.vararg):
+            # Variable-length argument, we can't determine the length.
+            return
         if isinstance(infered, (astroid.Tuple, astroid.List)):
             # attempt to check unpacking is properly balanced
             values = infered.itered()