0(1) element: null
1(2) element: PyIfStatement
2(3,4) READ ACCESS: True
3(13) element: null. Condition: True:false
4(5) element: null. Condition: True:true
5(6) ASSERTTYPE ACCESS: True
6(7) element: PyStatementList
7(8) element: PyForStatement
8(9) READ ACCESS: range
9(10,19) element: PyCallExpression: range
10(11) element: PyTargetExpression: _
11(12) WRITE ACCESS: _
12(10,19) element: PyPrintStatement
13(14) Unreachable
14(15) element: PyStatementList
15(16) element: PyRaiseStatement
16(17) READ ACCESS: Exception
17(18) element: PyCallExpression: Exception
18(21) raise: PyRaiseStatement
19(20) element: PyReturnStatement
20(21) READ ACCESS: True
21() element: null