Opencv，函数问题TypeError: Incorrect type of self (must be 'VideoCapture' or its derivative)

Question

部分代码

vc = cv2.VideoCapture('./test.mp4')
#省略部分。。。。
while True:
    ret, frame = vc.read()
    if frame is None:
        break

报错显示：

ret, frame = vc.read()
TypeError: Incorrect type of self (must be 'VideoCapture' or its derivative)

Answer 1

瞅瞅
https://blog.csdn.net/Sumehay/article/details/85989519