小白学爬虫，为何没错误也没结果，求大佬。。

不知道为什么错了


#!/usr/bin/python
# coding:utf-8
# 实现一个简单的爬虫，爬取百度贴吧图片
import urllib.request
import re

# 根据url获取网页html内容
def getHtmlContent(url):
page = urllib.request.urlopen(url)
return page.read()

# 从html中解析出所有jpg图片的url
# 百度贴吧html中jpg图片的url格式为：<img ... src="XXX.jpg" width=...>
def getJPGs(html):
# 解析jpg图片url的正则
jpgReg = re.compile(r'<img src="(https://ss1.baidu.com/-4o3dSag_xI4khGko9WTAnF6hhy/image/h%3D300/.+?\.jpg)" width') # 注：这里最后加一个'width'是为了提高匹配精确度
# 解析出jpg的url列表
jpgs = re.findall(jpgReg,html.decode('utf-8'))

return jpgs

# 用图片url下载图片并保存成制定文件名
def downloadJPG(imgUrl,fileName):
urllib.urlretrieve(imgUrl,fileName)

# 批量下载图片，默认保存到当前目录下
def batchDownloadJPGs(imgUrls,path = 'C:/Users/Administrator/Desktop/pic2/'):
# 用于给图片命名
count = 1
for url in imgUrls:
downloadJPG(url,''.join([path,'{0}.jpg'.format(count)]))
count = count + 1

# 封装：从百度贴吧网页下载图片
def download(url):
html = getHtmlContent(url)
jpgs = getJPGs(html)
batchDownloadJPGs(jpgs)

def main():
url = 'https://image.baidu.com/'
download(url)

if __name__ == '__main__':
main()