Thread python TypeError: threadcb() takes 1 positional argument but 4 were given

에러 문구

Thread python TypeError: threadcb() takes 1 positional argument but 4 were given

문제 코드

threading.Thread(target=threadcb, args=(arg))

이런 형태에서 에러 발생

해결 방법

인자에 "," 추가 

threading.Thread(target=threadcb, args=(arg,))