...
cnt = 0
font = cv2.FONT_HERSHEY_SIMPLEX
for n in temp3_value:
print(n)
x = int(n['x'])
y = int(n['y'])
point = (x,y)
cv2.circle(img, point, 1, (0,0,255), 4)
cv2.putText(img, str(cnt), point, font, 0.5, (255, 255, 255), 1)
cnt = cnt + 1
...
cv2.putText(img, str(cnt), point, font, 0.5, (255, 255, 255), 1)
参数分别为：原图，文字，文字坐标，字体，字体大小，字体颜色，字体粗细