0(1) element: null
1(2) element: PyReturnStatement
2(3) READ ACCESS: dict
3(4) element: PyGeneratorExpression
4(5,11) element: PyDictLiteralExpression
5(6) element: PyTupleExpression
6(7) WRITE ACCESS: name
7(8) WRITE ACCESS: val
8(9) element: PyParenthesizedExpression
9(10) READ ACCESS: name
10(5,11) READ ACCESS: val
11(12) element: PyCallExpression: dict
12() element: null