python 爬虫（爬取网页的img并下载）

from urllib.request import urlopen # 引用第三方库
import requests #引用requests/用于访问网站（没安装需要安装）
from pyquery import PyQuery as pq #引用PyQuery用于 解析
# def get_url():
# # url = 'https://s2.app1108017098.qqopenapp.com/?from=singlemessage&isappinstalled=0'
# url = 'https://hm.baidu.com/hm.gif?cc=0&ck=1&cl=24-bit&ds=1920x1080&vl=328&ep=%7B%22netAll%22%3A168%2C%22netDns%22%3A23%2C%22netTcp%22%3A137%2C%22srv%22%3A49%2C%22dom%22%3A497%2C%22loadEvent%22%3A910%7D&et=87&ja=0&ln=zh-cn&lo=0&lt=1545373503&rnd=931647730&si=85ae31d909724b3fa587d26d1a21ab94&v=1.2.35&lv=2'
# def get():
# ret = urlopen(url).read()# 获取网页的源码
# print(ret)
# f = open('te.txt', 'wb') # 若是'wb'就表示写二进制文件
# f.write(ret)
# f.close()
# return get#返回函数
#
# get_func = get_url()#函数接收
# get_func()#输出 调用
# import requests
# from pyquery import PyQuery as pq
#爬取网页
html = requests.get('http://www.4399.com/flash/gamehw.htm').content.decode("gb2312")
#解析
doc = pq(html)
# f = open('te.txt', 'w',encoding='utf-8') # 若是'wb'就表示写二进制文件
# f.write(html)
# f.close()
# 选择器 筛选语法
adc = doc('.tm_list > li > a').items()
for adv in adc:
# url = adv.find('img')
#找到html下的img 和 src
url_q = adv.find('img').attr('lz_src')
if url_q == None:
url_q = adv.find('img').attr('src')
#访问地址
url_a = requests.get(url =url_q).content
#拿到HTML下的名称
name = adv.find('b').text()
print("下载的图像：%s,地址为 %s" %(name,url_q))
#打开文件目录
with open("./1/"+name+".jpg",'wb') as file:
#保存图片
file.write(url_a)
print("图片下载完毕")