1 function-entry:call_stack.py:start:23
2 function-entry: call_stack.py:function_1:1
3 function-entry:  call_stack.py:function_3:9
4function-return:  call_stack.py:function_3:10
5function-return: call_stack.py:function_1:2
6 function-entry: call_stack.py:function_2:5
7 function-entry:  call_stack.py:function_1:1
8 function-entry:   call_stack.py:function_3:9
9function-return:   call_stack.py:function_3:10
10function-return:  call_stack.py:function_1:2
11function-return: call_stack.py:function_2:6
12 function-entry: call_stack.py:function_3:9
13function-return: call_stack.py:function_3:10
14 function-entry: call_stack.py:function_4:13
15function-return: call_stack.py:function_4:14
16 function-entry: call_stack.py:function_5:18
17function-return: call_stack.py:function_5:21
18function-return:call_stack.py:start:28
19