Python主線程和子線程之間的關系

1. 主線程等待子線程執行完再結束

# 導包
from threading import *
from time import *
def dance():
    print(current_thread())
    for i in range(6):
        print('跳舞...')
        sleep(0.2)


if __name__ == '__main__':
    dance_thread = Thread(target=dance)
    dance_thread.start()
    sleep(0.5)
    print('over')

2. 主線程結束時直接銷毀子線程

# 導包
from threading import *
from time import *
def dance():
    print(current_thread())
    for i in range(6):
        print('跳舞...')
        sleep(0.2)


if __name__ == '__main__':
    # 將該線程設置為守護主線程
    dance_thread = Thread(target=dance)
    dance_thread.setDaemon(True)
    dance_thread.start()
    sleep(0.5)
    print('over')