(event, x, y, flags, param)
用左键点击屏幕，打印坐标
    :param event:
    :param x:
    :param y:
    :param flags:
    :param param:
    :return:
用左键点击屏幕，打印坐标
    :param event:
    :param x:
    :param y:
    :param flags:
    :param param:
    :return:
用左键点击屏幕，打印坐标 : param event : : param x : : param y : : param flags : : param param : : return :
def click_event(event, x, y, flags, param):
    '''
    用左键点击屏幕，打印坐标
    :param event:
    :param x:
    :param y:
    :param flags:
    :param param:
    :return:
    '''
    if event == cv2.EVENT_LBUTTONDOWN:
        print(x, y, flags, param)
def click_event ( event , x , y , flags , param ) : if event == cv2 . EVENT_LBUTTONDOWN : print ( x , y , flags , param )