---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
library/python/runtime_py3/test/traceback/crash.py in main()
     42     sys.executable = '<traceback test>'
     43 
---> 44     one()
        global one = <function one>

library/python/runtime_py3/test/traceback/crash.py in one()
     10 
     11 def one():
---> 12     modfunc(two)  # aaa
        global modfunc = <function modfunc>
        global two = <function two>
     13 
     14 

library/python/runtime_py3/test/traceback/mod/__init__.py in modfunc(f=<function two>)
      1 def modfunc(f):
      2     # lalala
----> 3     f()  # call back to caller
        f = <function two>

library/python/runtime_py3/test/traceback/crash.py in two()
     14 
     15 def two():
---> 16     three(42)
        global three = <function three>
     17 
     18 

library/python/runtime_py3/test/traceback/crash.py in three(x=42)
     18 
     19 def three(x):
---> 20     raise RuntimeError('Kaboom! I\'m dead: {}'.format(x))
        global RuntimeError.format = undefined
        x = 42
     21 
     22 

RuntimeError: Kaboom! I'm dead: 42