Verification of the role of join in python only multithreading
tags: Python Multithreading
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When no join is added, the relationship between the main thread and the child thread is verified
Code
import threading
import time
def wait2s():
time.sleep(2)
print('we have sleep 2s')
if __name__=="__main__":
t=threading.Thread(target=wait2s)
t.start()
print('main thread over')
print(t.is_alive())
operation result
When using join, the relationship between the main thread and the child thread
Code:
import threading
import time
def wait2s():
time.sleep(2)
print('we have sleep 2s')
if __name__=="__main__":
t=threading.Thread(target=wait2s)
t.start()
t.join()
print('main thread over')
print(t.is_alive())
operation result
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