0(1) element: null
1(2) element: PyWhileStatement
2(3,4) READ ACCESS: True
3() element: null. Condition: True:false
4(5) element: null. Condition: True:true
5(6) element: PyStatementList
6(7) element: PyTryExceptStatement
7(8,12) element: PyTryPart
8(9,12) element: PyAssignmentStatement
9(10,12) READ ACCESS: could_raise
10(11,12) element: PyCallExpression: could_raise
11(12,15) WRITE ACCESS: foo
12(13) element: PyExceptPart
13(14) READ ACCESS: IndexError
14(17) element: PyBreakStatement
15(16) element: PyPrintStatement
16(1) READ ACCESS: foo
17() element: null