Reptile exercise - climbing sister map

the urllib.request Import 
Import The urllib.parse 
Import Re, OS, Time 
'' ' 
splice url, sends a request to obtain the contents of the response, response content analysis, data storage 
' '' 
DEF Get_Request (NEW_URL): 
    headers = { 
        '- Agent-the User' : 'the Mozilla / 5.0 (the Windows NT 10.0; Win64; x64-) AppleWebKit / 537.36 (KHTML, like the Gecko) the Chrome / 76.0.3809.100 Safari / 537.36', 
    } 
    Request = urllib.request.Request (URL = NEW_URL, headers = headers) 
    Request return 

DEF get_content (Request): 
    Response = the urllib.request.urlopen (Request) 
    # Print (. response.read () decode ( 'GBK')) 
    return response.read () decode ( 'GBK'). 

DEF parse_content ( Content): 
    '' ' 
    <div class = "thumb">
        href="/article/122125840" target="_blank"> <a 
            <IMG the src = "// pic.qiushibaike.com/system/pictures/12212/122125840/medium/EAB3PVYM1XFGJF1A.jpg" Alt = "is a fat chin They are the meat of me "> 
        </a> 
    </ div> 
    <div class =" PIC "> 
            <a target="_blank" href="https://www.meizitu.com/a/5521.html"> 
                <img src = "http://pic.topmeizi.com/wp-content/uploads/2017a/04/08/limg.jpg" alt = "<b> Figure welfare weekend, my uncle served last with a sense of </ B> "> 
            </a> 
   </ div> 
   <H3 class =" TIT "> 
       <a href="https://www.meizitu.com/a/5521.html" target="_blank">
       <b> Figure welfare weekend, my uncle served last with a sense of </ b> 
       </a> 
   </ h3> 
    '' '
    patten = re.compile (r '<div class = "pic">. *? <img src = "(. *?)" alt = "(. *?)". *? </ div>', re. S) 
    RET = patten.findall (Content) 
    Print (RET) 
    # Print (len (RET)) 
    down_load (RET) 
# 
DEF down_load (RET): 
    dirname = 'MZ' 
    for TP in RET: 
        # extracted image address 
        image_url = tp [0] 
        # name image taken 
        image_name TP = [-1] [. 3: -4] 
        # image_name = TP [. 1] 
        # = patten1 the re.compile (R & lt '<B> (*) </ B>.') 
        # = patten1.findall RET1 (image_name) 
        # generate folder name 
        IF not os.path.exists (dirname): 
            os.mkdir(dirname)
        filename =image_name+'.'+ image_url.split('.')[-1]
        Print # (filename) 
        filepath = os.path.join (dirname, filename) 
        # Print (filepath) 
        Print ( 'S .... Picture Downloading%'% filename) 
        urllib.request.urlretrieve (image_url, filepath) 
        Print ( 'end download pictures S ....%'% filename) 
        the time.sleep (2) 

DEF main (): 
    # enter the starting page number 
    start_page = int (input ( "Please enter the starting page number")) 
    end_page = int (the iNPUT ( "Please enter an end page number")) 
    url = 'https://www.meizitu.com/a/' 
    for page in the Range (START_PAGE, end_page + 1): 
        Print ( "downloading% s of pages .... . "Page%) 
        # splicing URL 
        NEW_URL URL = + 'list_1 _' + STR (Page) + '.html'
        # print(page)
        # print(new_url)
        request = get_request(new_url)
        content = get_content(request)
        # print(content.read().decode('gbk'))
        parse_content(content)
        print("结束下载第%s页....." % page)
        time.sleep(2)
if __name__ == '__main__':
    main()