求助：python线程同步报错，AssertionError: group argument must be None for now ？？？

Question

刚刚试的书上的例子~~

运行后报错了，以下为错误截图

Traceback (most recent call last):
File "c:/Users/57849/Desktop/python/9.4.2.py", line 31, in
main()
File "c:/Users/57849/Desktop/python/9.4.2.py", line 21, in main
thread=mythread(i)
File "D:\anaconda\lib\threading.py", line 784, in init
assert group is None, "group argument must be None for now"
AssertionError: group argument must be None for now

还有顺便问一下，图中代码line9-12干嘛还要重复一遍？

Answer 1

是不是__init__() 写成了__int__()