python3 关于多线程的代码吗运行顺序

from threading import Thread
import time
import threading
def main():
    for i in range(10):
        t = Thread(target=A, args=(i,))
        t.start()
    B()
def A(i):
    time.sleep(1)
    print(i)
def B():
    print("该我了")
if __name__ == '__main__':
    main()

求助大佬，我这代码改怎么改，才能让B函数在A函数后面运行