python 图中找目标并截图

import numpy as np
def sjjt(xha,sjh,beitu,jl,xx,yy): #检查目标，并将目标指定范围内截图
    pull_screenshot(xha,sjh,xx)
    #pull_screenshot(xh,sjh) # 截图
    au='./tmall'+str(xx)+'.png'
    temp = cv2.imread(au)
    amn='./tmall'+str(yy)+'.png'
    target = cv2.imread(beitu)
    pos = find_button(target,temp)
    if pos:
        print(pos[0],pos[1])
        y=pos[1]-49
        y1=pos[1]+71
        x=pos[0]-50
        x1=pos[0]+60
        img_crop = temp[(y):(y1),(x):(x1)]#截图（先Y 后X)
        cv2.imwrite(amn, img_crop)#截图保存
        time.sleep(2)
        im=np.array(Image.open(amn).convert('RGB'))
        sought = [255,80,0]#红色颜色的特征
        result = np.count_nonzero(np.all(im==sought,axis=2))#统计图形中红色的比例
        print(result)
        return True
    else:
        return False