How to use 'python throw exception' in Python

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77def test_raise_and_catch_exception_in_function(self):
78 self.assert_ok("""\
79 def fn():
80 raise ValueError("oops")
82 try:
83 fn()
84 except ValueError as e:
85 print("Caught: %s" % e)
86 print("done")
87 """)

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62def _raise_thread_exception_cpython(thread_id, exception):
63 exctype = (exception if inspect.isclass(exception) else type(exception)).__name__
64 thread_id = ctypes.c_long(thread_id)
65 exception = ctypes.py_object(exception)
66 count = ctypes.pythonapi.PyThreadState_SetAsyncExc(thread_id, exception)
67 if count == 0:
68 logger.critical("Failed to set exception (%s) in thread %r.", exctype, thread_id.value)
69 elif count > 1: # pragma: no cover
70 logger.critical("Exception (%s) was set in multiple threads. Undoing...", exctype)
71 ctypes.pythonapi.PyThreadState_SetAsyncExc(thread_id, ctypes.c_long(0))

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