circuitpython/tests/thread/thread_exc1.py

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# test raising and catching an exception within a thread
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
import _thread
def foo():
raise ValueError
def thread_entry():
try:
foo()
except ValueError:
pass
with lock:
global n_finished
n_finished += 1
lock = _thread.allocate_lock()
n_thread = 4
n_finished = 0
# spawn threads
for i in range(n_thread):
_thread.start_new_thread(thread_entry, ())
# busy wait for threads to finish
while n_finished < n_thread:
pass
print("done")