0(1) element: null
1(2) element: PyTryExceptStatement
2(3,8) element: PyTryPart
3(4,8) element: PyForStatement
4(5,8,11) READ ACCESS: bar
5(6,8) element: PyTargetExpression: i
6(7,8) WRITE ACCESS: i
7(8,11) element: PyBreakStatement
8(9) element: PyExceptPart
9(10) element: PyRaiseStatement
10(12) READ ACCESS: Exception
11(12) element: PyReturnStatement
12() element: null