实现向svg末班中插入多张图片

import os, base64,re
li=os.listdir(r'C:\Users\lenovo\Desktop\苕溪诗切图320jpg')
try:
    for i in li:
        print(i)
        path=os.path.join(r'C:\Users\lenovo\Desktop\苕溪诗切图320jpg',i)
        print(path)
        ch_path1=os.path.join(r'C:\Users\lenovo\Desktop\苕溪诗切图320png',i.split('.')[0]+'.png')
        print(ch_path1)
        svg_path = os.path.join(r'C:\Users\lenovo\Desktop\苕溪诗切图320svg',i.split('.')[0]+'.svg')
        print(svg_path)
        with open(r'C:\Users\lenovo\Desktop\苕溪诗切图320svg\模板.svg', mode='rb') as f:
            m=f.read()
            s = m.decode('utf-8')
            # print(s)
            goal=re.findall('base64,(.*?)"',s,re.S)
            with open(ch_path1,mode='rb') as f:
                imgdata1 = base64.b64encode(f.read())
                print(str(imgdata1)[2:-1])
            with open(path,mode='rb') as f:
                imgdata2 = base64.b64encode(f.read())
                print(str(imgdata2)[2:-1])
            newsvg=s.replace(goal[1],str(imgdata1)[2:-1]).replace(goal[0],str(imgdata2)[2:-1]).encode('utf-8')
            # print(newsvg)
            print('ok')
            with open(svg_path,mode='wb') as f:
                f.write(newsvg)
                print('ok')

except:
    print('执行结束')
    li = os.listdir(r'C:\Users\lenovo\Desktop\苕溪诗切图320svg')
    print(li[:-1:1])