this is patch
[ 988698 ] compiler.transformer fix for (a, b) = 1, 2
fixing bug
[ 988613 ] compiler.transformer and tuple unpacking
diff --git a/Lib/compiler/transformer.py b/Lib/compiler/transformer.py
index 6832cf1..aa5a28b 100644
--- a/Lib/compiler/transformer.py
+++ b/Lib/compiler/transformer.py
@@ -929,7 +929,7 @@
# loop to avoid trivial recursion
while 1:
t = node[0]
- if t == symbol.exprlist or t == symbol.testlist:
+ if t == symbol.exprlist or t == symbol.testlist or t == symbol.testlist_gexp:
if len(node) > 2:
return self.com_assign_tuple(node, assigning)
node = node[1]
diff --git a/Lib/test/test_transformer.py b/Lib/test/test_transformer.py
new file mode 100644
index 0000000..2b0f1e8
--- /dev/null
+++ b/Lib/test/test_transformer.py
@@ -0,0 +1,37 @@
+import unittest
+from test import test_support
+from compiler import transformer, ast
+from compiler import compile
+
+class Tests(unittest.TestCase):
+
+ def testMultipleLHS(self):
+ """ Test multiple targets on the left hand side. """
+
+ snippets = ['a, b = 1, 2',
+ '(a, b) = 1, 2',
+ '((a, b), c) = (1, 2), 3']
+
+ for s in snippets:
+ a = transformer.parse(s)
+ assert isinstance(a, ast.Module)
+ child1 = a.getChildNodes()[0]
+ assert isinstance(child1, ast.Stmt)
+ child2 = child1.getChildNodes()[0]
+ assert isinstance(child2, ast.Assign)
+
+ # This actually tests the compiler, but it's a way to assure the ast
+ # is correct
+ c = compile(s, '<string>', 'single')
+ vals = {}
+ exec c in vals
+ assert vals['a'] == 1
+ assert vals['b'] == 2
+
+def test_main():
+ test_support.run_unittest(
+ Tests
+ )
+
+if __name__ == "__main__":
+ test_main()