救救孩子，这是怎么回事儿

import numpy as np
import cv2

drawing = False #鼠标按下为真
mode = True #如果为真，画矩形，按m切换为曲线
ix,iy=-1,-1

def draw_circle(event,x,y,flags,param):
global ix,iy,drawing,mode

if event == cv2.EVENT_LBUTTONDOWN:
    drawing = True
    ix,iy=x,y

elif event == cv2.EVENT_MOUSEMOVE:
    if drawing == True:
        if mode == True:
            cv2.rectangle(img,(ix,iy),(x,y),(0,255,0),-1)
        else:
            cv2.circle(img,(x,y),5,(0,0,255),-1)
elif event == cv2.EVENT_LBUTTONUP:
    drawing = False
    if mode == True:
        cv2.rectangle(img,(ix,iy),(x,y),(0,255,0),-1)
    else:
        cv2.circle(img,(x,y),5,(0,0,255),-1)

img = np.zeros((512,512,3),np.uint8)
cv2.namedWindow('image')
cv2.setMouseCallback('image',draw_circle)

while(1):
cv2.imshow('image',img)
k = cv2.waitKey(1) & 0xFF
if k == ord('m') :
mode = not mode
elif k == 27:
break
cv2.destroyAllWindows()

下次建议粘贴代码错误可以截图,这样真心不好回答你的问题.没有谁能有那么多时间将你的代码敲出来复现