python如何实现PIL模块在图片画线写字

import sys
from PIL import Image,ImageDraw

im = Image.open("th.png")
draw = ImageDraw.Draw(im) #实例化一个对象
draw.line((0, 0) + im.size, fill=128, width=5) #线的起点和终点，线宽
draw.line((0, im.size[1], im.size[0], 0), fill=128)
draw.line((0,im.size[1]/2)+(im.size[0]/2,im.size[1]), fill=128, width=5)
im.show()

from PIL import Image, ImageDraw, ImageFont

# get an image
base = Image.open('th.jpg').convert('RGBA')
# make a blank image for the text, initialized to transparent text color
txt = Image.new('RGBA', base.size, (255,255,255,0))
# get a font 需要在C:\Windows\Fonts拷贝一份字体文件 当前脚本路径下
fnt = ImageFont.truetype('cambriai.ttf', 40)
# get a drawing context
d = ImageDraw.Draw(txt)
# draw text, half opacity
d.text((10,10), "Hello", font=fnt, fill=(255,255,255,128))
# draw text, full opacity
d.text((10,60), "World", font=fnt, fill=(255,255,255,255))
fillcolor = "#ff0000"  #字体颜色
d.text((base.size[0]-20,10), "4", font=fnt, fill=fillcolor)
out = Image.alpha_composite(base, txt)
out.show() 

import numpy as py
import os
import cv2 as cv
with open('labelFaceData.txt','r')as fp:#打开记录了数据的记事本文件
  pictureNumber = 0#用来记录照片的数量
  while 1:
    count = 1
    line = fp.readline()#读取文件中每一行的数据
    if not line:#如果读取失败则退出
      break
    pictureNumber+=1#图片数加1
    str1 = line.split()#用一个数组以字符串的形式储存文件中的数据
    img = cv.inread(str[0])#str[0]中存放的是要读取的图片地址，用cv.inread读取它
    faceNumber = (len(str1)-1)/16#用来记录人脸的总数
    for i in reage(faceNumber):#用for循环对人脸进行画框
      x = int(str1[count+1])#x,y,w,h为画框需要的点
      y = int(str1[count+2])
      w = int(str1[count+3])
      h = int(str1[count+4])
      cv.rectangle(img,(x,y),(x+w,y+h),(255,0,0),3,4,0)#用rectangle对图像进行画框
      count+=16
    #cv.namedWindow(str[0],0)
    #cv.imshow(str[0],img);
    #cv.waitKey(0)
    cv.imwrite("./result/image1_"+str(pictureNumber)+".jpg",img)#保存图片
fp.close()