0(1) element: null
1(2) element: PyForStatement
2(3,15) READ ACCESS: self
3(4) element: PyTupleExpression
4(5) WRITE ACCESS: start
5(6) WRITE ACCESS: end
6(7) WRITE ACCESS: name
7(8) element: PyIfStatement
8(9) READ ACCESS: hour
9(10) READ ACCESS: start
10(11) READ ACCESS: hour
11(12,3,15) READ ACCESS: end
12(13) element: PyStatementList. Condition: hour >= start and hour < end:true
13(14) element: PyReturnStatement
14(15) READ ACCESS: name
15() element: null