python根据正则表达式生成指定规律的网址

import os
 
def file_name(file_dir): 
    for root, dirs, files in os.walk(file_dir):
        print(root) #当前目录路径
        print(dirs) #当前路径下所有子目录
        print(files) #当前路径下所有非目录子文件
dir1="d:/tu1"
dir1="https://cdn.deere.com:2020/57-tuimm/uploads/allimg/2002101/"
#file_name(dir1)
import exrex
for i in range(5):
    aa=exrex.getone(r'\d{1,4}')
    print(dir1+aa+".jpg")
    i+=1

　结果：

================== RESTART: D:/Python/Python37/lian0213a.py ==================
https://cdn.deere.com:2020/57-tuimm/uploads/allimg/2002101/7061.jpg
https://cdn.deere.com:2020/57-tuimm/uploads/allimg/2002101/0.jpg
https://cdn.deere.com:2020/57-tuimm/uploads/allimg/2002101/20.jpg
https://cdn.deere.com:2020/57-tuimm/uploads/allimg/2002101/202.jpg
https://cdn.deere.com:2020/57-tuimm/uploads/allimg/2002101/0601.jpg
>>>