micropython/tests/thread/thread_exit1.py

# test _thread.exit() function
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd

try:
    import utime as time
except ImportError:
    import time
import _thread

def thread_entry():
    _thread.exit()

_thread.start_new_thread(thread_entry, ())
_thread.start_new_thread(thread_entry, ())

# wait for threads to finish
time.sleep(1)
print('done')