python 爬蟲（爬取網頁的img並下載）

from urllib.request import urlopen # 引用第三方庫
import requests #引用requests/用於訪問網站（沒安裝須要安裝）
from pyquery import PyQuery as pq #引用PyQuery用於 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()# 獲取網頁的源碼
#         print(ret)
#         f = open('te.txt', 'wb')  # 如果'wb'就表示寫二進制文件
#         f.write(ret)
#         f.close()
#     return get#返回函數
#
# get_func = get_url()#函數接收
# get_func()#輸出 調用
# import requests
# from pyquery import PyQuery as pq
#爬取網頁
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')  # 如果'wb'就表示寫二進制文件
# f.write(html)
# f.close()
# 選擇器 篩選語法
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')
        #訪問地址
    url_a = requests.get(url =url_q).content
    #拿到HTML下的名稱
    name = adv.find('b').text()
    print("下載的圖像：%s,地址爲 %s" %(name,url_q))
    #打開文件目錄
    with open("./1/"+name+".jpg",'wb') as file:
        #保存圖片
        file.write(url_a)
print("圖片下載完畢")