added a few tests for lhs object attr setting

Author: craigbarratt

tests/custom_components/pyscript/test_unit_eval.py

@@ -145,6 +145,9 @@
         "z = [1,2,3]; ((x, y), (z[2], t)) = ((1, 2), (20, 4)); [x, y, z, t]",
         [1, 2, [1, 2, 20], 4],
     ],
+    ["Foo = type('Foo', (), {'x': 100}); Foo.x = 10; Foo.x", 10],
+    ["Foo = type('Foo', (), {'x': 100}); Foo.x += 10; Foo.x", 110],
+    ["Foo = [type('Foo', (), {'x': 100})]; Foo[0].x = 10; Foo[0].x", 10],
     ["eval('1+2')", 3],
     ["x = 5; eval('2 * x')", 10],
     ["x = 5; exec('x = 2 * x'); x", 10],