# stress test for creating many threads

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

def thread_entry(n):
 pass

thread_num = 0
while thread_num < 500:
 try:
 _thread.start_new_thread(thread_entry, (thread_num,))
 thread_num += 1
 except MemoryError:
 pass

# wait for the last threads to terminate
time.sleep(1)
print('done')