import cv2
import numpy as np
path="./datas/自动退出.png"
img = cv2.imdecode(np.fromfile(file=path, dtype=np.uint8), cv2.IMREAD_UNCHANGED)
image = cv2.cvtColor(img, cv2.COLOR_RGBA2BGRA)

cv2.imencode('.png',image)[1].tofile(path)