Infer the value before using it, accept astroid.List as well.

1 files changed, 8 insertions, 3 deletions

diff --git a/checkers/variables.py b/checkers/variables.py
index 02ed3df..2517b0c 100644
--- a/checkers/variables.py
+++ b/checkers/variables.py
@@ -545,13 +545,18 @@ builtins. Remember that you should avoid to define new builtins when possible.'
     @check_messages('unbalanced-tuple-unpacking')
     def visit_assign(self, node):
          """ Check unbalanced tuple unpacking for assignments. """
-         if not isinstance(node.value, astroid.Tuple):
+         try:
+             infered = next(node.value.infer())
+         except astroid.InferenceError:
              return
-         if not isinstance(node.targets[0], astroid.Tuple):
+         
+         if not isinstance(infered, (astroid.Tuple, astroid.List)):
+             return
+         if not isinstance(node.targets[0], (astroid.Tuple, astroid.List)):
              return
 
          targets = node.targets[0].itered()
-         values = node.value.itered()
+         values = infered.itered()
 
          if any(not isinstance(target_node, astroid.AssName)
                 for target_node in targets):