circuitpython/tests/thread/thread_lock2.py

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# test _thread lock objects with multiple threads
#
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# SPDX-FileCopyrightText: Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
#
# SPDX-License-Identifier: MIT
try:
import utime as time
except ImportError:
import time
import _thread
lock = _thread.allocate_lock()
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def thread_entry():
lock.acquire()
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print("have it")
lock.release()
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# spawn the threads
for i in range(4):
_thread.start_new_thread(thread_entry, ())
# wait for threads to finish
time.sleep(1)
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print("done")