0(1) element: null
1(2) element: PyTryExceptStatement
2(3,7) element: PyTryPart
3(4,7) element: PyRaiseStatement
4(5,7) READ ACCESS: Exception
5(6,7) element: PyCallExpression: Exception
6(7,15) raise: PyRaiseStatement
7(8) element: PyExceptPart
8(9) element: PyAssignmentStatement
9(10) READ ACCESS: Exception
10(11) element: PyCallExpression: Exception
11(12) WRITE ACCESS: foo
12(13) element: PyRaiseStatement
13(14) READ ACCESS: foo
14(15) raise: PyRaiseStatement
15() element: null