{"id":1903,"date":"2019-01-26T12:13:58","date_gmt":"2020-02-12T13:56:01","guid":{"rendered":"http:\/\/vip.fxxkpython.com\/?p=1903"},"modified":"2020-02-12T21:56:10","modified_gmt":"2020-02-12T13:56:10","slug":"0b17860b74","status":"publish","type":"post","link":"https:\/\/vip.fxxkpython.com\/?p=1903","title":{"rendered":"python\u722c\u866b06 | \u4f60\u7684\u7b2c\u4e00\u4e2a\u722c\u866b\uff0c\u722c\u53d6\u5f53\u5f53\u7f51 Top 500 \u672c\u4e94\u661f\u597d\u8bc4\u4e66\u7c4d"},"content":{"rendered":"
\n


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\u6765\u5566\uff0c\u8001\u5f1f<\/p>\n


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\"python\"<\/p>\n


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\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u600e\u4e48\u4f7f\u7528<\/p>\n


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Requests<\/a><\/p>\n


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\u8fdb\u884c\u5404\u79cd\u8bf7\u6c42\u9a9a\u64cd\u4f5c<\/p>\n


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\u4e5f\u77e5\u9053\u4e86\u5bf9\u670d\u52a1\u5668\u8fd4\u56de\u7684\u6570\u636e\u5982\u4f55\u4f7f\u7528<\/p>\n


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\u6b63\u5219\u8868\u8fbe\u5f0f<\/a><\/p>\n


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\u6765\u8fc7\u6ee4\u6211\u4eec\u60f3\u8981\u7684\u5185\u5bb9<\/p>\n


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…<\/p>\n


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\u90a3\u4e48\u63a5\u4e0b\u6765<\/p>\n


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\u6211\u4eec\u5c31\u4f7f\u7528 requests \u548c re \u6765\u5199\u4e00\u4e2a\u722c\u866b<\/span><\/p>\n


<\/p>\n

\u4f5c\u4e3a\u4e00\u4e2a\u7231\u770b\u4e66\u7684\u4f60\uff08\u8bf4\u7684\u8ddf\u771f\u7684\u4f3c\u7684\uff09<\/p>\n


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\"python\"<\/p>\n


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\u600e\u4e48\u80fd\u53d1\u73b0\u597d\u4e66\u5462\uff1f<\/p>\n


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\u6240\u4ee5\u6211\u4eec<\/p>\n


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\u722c\u53d6\u5f53\u5f53\u7f51\u7684\u524d 500 <\/strong>\u672c\u597d\u4e94\u661f\u8bc4\u4e66\u7c4d<\/p>\n


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\u600e\u4e48\u6837\uff1f<\/p>\n


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\"python\"<\/p>\n


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ok<\/p>\n


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\u63a5\u4e0b\u6765\u5c31\u662f<\/p>\n


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\u5b66\u4e60 python \u7684\u6b63\u786e\u59ff\u52bf<\/strong><\/p>\n


<\/strong><\/p>\n

\u8bf7\u5728\u7535\u8111\u7684\u966a\u540c\u4e0b<\/span><\/p>\n


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\u8fb9\u770b\u672c\u6587\u8fb9\u7ec3\u4e60<\/span><\/p>\n


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\u9996\u5148\u6211\u4eec\u8981\u5bf9\u6211\u4eec\u7684\u76ee\u6807\u7f51\u7ad9\u8fdb\u884c\u5206\u6790<\/p>\n


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\u5148\u6478\u6e05\u5bf9\u65b9\u7684\u5e95<\/p>\n


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\u6211\u4eec\u624d\u80fd\u6218\u65e0\u4e0d\u80dc<\/p>\n


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\"python\"<\/p>\n


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\u6253\u5f00\u8fd9\u4e2a\u4e66\u7c4d\u6392\u884c\u699c\u7684\u5730\u5740<\/p>\n


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http:\/\/bang.dangdang.com\/books\/fivestars\/01.00.00.00.00.00-recent30-0-0-1-1<\/strong><\/span><\/p>\n


<\/strong><\/span><\/p>\n

\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u662f\u8fd9\u6837\u7684\u4e00\u4e2a\u7f51\u9875<\/p>\n


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\"python\"<\/p>\n


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\u6bcf\u4e00\u9875\u663e\u793a 20 \u672c\u4e66<\/p>\n


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\u5f53\u6211\u4eec\u70b9\u51fb\u4e0b\u4e00\u9875\u7684\u65f6\u5019<\/p>\n


<\/p>\n

\u4f60\u53ef\u4ee5\u53d1\u73b0\u5730\u5740\u53d8\u4e86<\/p>\n


<\/p>\n

http:\/\/bang.dangdang.com\/books\/fivestars\/01.00.00.00.00.00-recent30-0-0-1-<\/span>2<\/span><\/p>\n


<\/p>\n

\u4e5f\u5c31\u662f\u6211\u4eec\u7ffb\u5230\u7b2c\u51e0\u9875\u7684\u65f6\u5019<\/p>\n


<\/p>\n

\u94fe\u63a5\u5730\u5740\u7684\u6700\u540e\u4e00\u4e2a\u53c2\u6570\u4f1a\u8ddf\u7740\u53d8<\/p>\n


<\/p>\n

\u90a3\u4e48\u6211\u4eec\u7b49\u4f1a\u5728 python \u4e2d\u53ef\u4ee5\u7528\u4e00\u4e2a\u53d8\u91cf<\/p>\n


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\u6765\u5b9e\u73b0\u83b7\u53d6\u4e0d\u540c\u9875\u6570\u7684\u5185\u5bb9<\/p>\n


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\"python\"<\/p>\n


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\u63a5\u7740<\/p>\n


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\u7528\u6211\u4eec\u4e4b\u524d\u8bf4\u7684 Chrome<\/a> \u9a9a\u64cd\u4f5c<\/p>\n


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\u6765\u5206\u6790\u4e00\u4e0b<\/p>\n


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\u6211\u4eec\u8981\u7684\u5185\u5bb9\u662f\u600e\u4e48\u8bf7\u6c42\u7684<\/p>\n


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\u4ee5\u53ca<\/p>\n


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\u8fd4\u56de\u7ed9\u6211\u4eec\u7684\u6e90\u4ee3\u7801\u662f\u4ec0\u4e48\u6837\u7684<\/p>\n


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\"python\"<\/p>\n


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\u53ef\u4ee5\u770b\u5230<\/p>\n


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\u6211\u4eec\u901a\u8fc7 GET \u8bf7\u6c42<\/p>\n


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\"python\"<\/p>\n


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\u6211\u4eec\u7684\u8bf7\u6c42\u5934<\/p>\n


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\"python\"<\/p>\n


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\u8fd9\u662f\u670d\u52a1\u5668\u8fd4\u56de\u6765\u7684\u6570\u636e<\/p>\n


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\"python\"<\/p>\n


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\u63a5\u7740\u6211\u4eec\u518d\u6765\u5206\u6790\u4e00\u4e0b\u6211\u4eec\u8981\u6293\u53d6\u7684\u5173\u952e\u4fe1\u606f<\/p>\n


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\"python\"<\/p>\n


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\u6211\u4eec\u8981\u7684\u5c31\u662f\u524d 500 \u672c\u4e66\u7684<\/p>\n


<\/p>\n

\u6392\u540d<\/span><\/p>\n

\u4e66\u540d<\/span><\/p>\n

\u56fe\u7247\u5730\u5740<\/span><\/p>\n

\u4f5c\u8005<\/span><\/p>\n

\u63a8\u8350\u6307\u6570<\/span><\/p>\n

\u4e94\u661f\u8bc4\u5206\u6b21\u6570<\/span><\/p>\n

\u4ef7\u683c<\/span><\/p>\n


<\/span><\/p>\n

\u901a\u8fc7\u6e90\u7801\u6211\u4eec\u53ef\u4ee5\u770b\u5230
<\/p>\n


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\u8fd9\u4e9b\u4fe1\u606f\u88ab\u653e\u5728\u4e86 <li> \u6807\u7b7e\u4e2d<\/p>\n


<\/p>\n

\"python\"<\/p>\n

\"python\"<\/p>\n


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\u90a3\u4e48\u6211\u4eec\u7b49\u4f1a\u5c31\u53ef\u4ee5\u4f7f\u7528<\/p>\n


<\/p>\n

\u5e74\u8f7b\u4eba\uff0c\u4e0d\u4f1a\u6b63\u5219\u8868\u8fbe\u5f0f\u4f60\u7761\u5f97\u7740\u89c9\uff1f\u6709\u70b9\u51fa\u606f\u6ca1\u6709\uff1f<\/a>
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\u6765\u8fdb\u884c\u8fc7\u6ee4\u6211\u4eec\u8981\u7684\u4fe1\u606f<\/p>\n


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\u4e00\u987f\u5206\u6790\u5b8c\u4e86\u4e4b\u540e<\/p>\n


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\u63a5\u4e0b\u6765\u64b8\u4ee3\u7801\u4e86<\/p>\n


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\"python\"<\/p>\n


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\u4e3b\u8981\u601d\u8def<\/p>\n


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\u4f7f\u7528 page \u53d8\u91cf\u6765\u5b9e\u73b0\u7ffb\u9875<\/p>\n


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\u6211\u4eec\u4f7f\u7528 requests \u8bf7\u6c42\u5f53\u5f53\u7f51<\/p>\n


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\u7136\u540e\u5c06\u8fd4\u56de\u7684 HTML \u8fdb\u884c\u6b63\u5219\u89e3\u6790<\/p>\n


<\/p>\n

\u7531\u4e8e\u6211\u4eec\u6682\u65f6\u8fd8\u6ca1\u5b66\u5230\u6570\u636e\u5e93<\/strong><\/p>\n


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\u6240\u4ee5\u89e3\u6790\u5b8c\u4e4b\u540e\u5c31\u628a\u5185\u5bb9\u5b58\u5230\u6587\u4ef6\u4e2d<\/p>\n


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\n
def<\/span> main<\/span>(page)<\/span>:<\/span>
    url = 'http:\/\/bang.dangdang.com\/books\/fivestars\/01.00.00.00.00.00-recent30-0-0-1-'<\/span> + str(page)
    html = request_dandan(url)
    items = parse_result(html) # \u89e3\u6790\u8fc7\u6ee4\u6211\u4eec\u60f3\u8981\u7684\u4fe1\u606f<\/span>
    
    for<\/span> item in<\/span> items:
        write_item_to_file(item)<\/code><\/pre>\n<\/section>\n

<\/p>\n
\u8bf7\u6c42\u5f53\u5f53\u7f51<\/p>\n

<\/p>\n
\u5f53\u6211\u4eec\u8bf7\u6c42\u6210\u529f\u4e4b\u540e<\/p>\n

<\/p>\n
\u62ff\u5230\u6e90\u4ee3\u7801<\/p>\n

<\/p>\n
\n
def<\/span> request_dandan<\/span>(url)<\/span>:<\/span>
    try<\/span>:
        response = requests.get(url)
        if<\/span> response.status_code == 200<\/span>:
            return<\/span> response.text
    except<\/span> requests.RequestException:
        return<\/span> None<\/span><\/code><\/pre>\n<\/section>\n

<\/p>\n

<\/p>\n
\u62ff\u5230\u6e90\u4ee3\u7801\u4e86<\/p>\n

<\/p>\n
\u5c31\u8981\u5bf9\u5176\u89e3\u6790<\/p>\n

<\/p>\n
\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u83b7\u53d6\u6211\u4eec\u60f3\u8981\u7684\u5173\u952e\u4fe1\u606f<\/p>\n

<\/p>\n
\u83b7\u53d6\u5230\u4e86\u4e4b\u540e\u6211\u4eec\u5c01\u88c5\u4e00\u4e0b\u6570\u636e<\/p>\n

<\/p>\n
\n
def<\/span> parse_result<\/span>(html)<\/span>:<\/span>
    pattern = re.compile('<li>.*?list_num.*?(d+).<\/div>.*?<img src=\"(.*?)\".*?class=\"name\".*?title=\"(.*?)\">.*?class=\"star\">.*?class=\"tuijian\">(.*?)<\/span>.*?class=\"publisher_info\">.*?target=\"_blank\">(.*?)<\/a>.*?class=\"biaosheng\">.*?<span>(.*?)<\/span><\/div>.*?<p><spansclass=\"price_n\">&yen;(.*?)<\/span>.*?<\/li>'<\/span>,re.S)
    items = re.findall(pattern,html)
    for<\/span> item in<\/span> items:
        yield<\/span> {
            'range'<\/span>: item[0<\/span>],
            'iamge'<\/span>: item[1<\/span>],
            'title'<\/span>: item[2<\/span>],
            'recommend'<\/span>: item[3<\/span>],
            'author'<\/span>: item[4<\/span>],
            'times'<\/span>: item[5<\/span>],
            'price'<\/span>: item[6<\/span>]
        }<\/code><\/pre>\n<\/section>\n

<\/p>\n

<\/p>\n
\u6253\u5370\u4e00\u4e0b\u770b\u770b\u7ed3\u679c<\/p>\n

<\/p>\n
\n
for<\/span> item in<\/span> items:
        print(item)<\/code><\/pre>\n<\/section>\n

<\/p>\n
\u53ef\u4ee5\u770b\u5230\u8fd9\u6837\u7684\u6570\u636e<\/p>\n

<\/p>\n
\"python\"<\/p>\n

<\/p>\n
\u6ca1\u6bdb\u75c5<\/p>\n

<\/p>\n
\u73b0\u5728\u6211\u4eec\u83b7\u53d6\u7684\u662f\u7b2c 1 \u9875\u7684\u6570\u636e<\/p>\n

<\/p>\n
\u5982\u4f55\u81ea\u52a8\u83b7\u53d6 25 \u9875 500 \u6761\u6570\u636e\u5462<\/p>\n

<\/p>\n
\u6765\u4e2a for \u5faa\u73af\u5457<\/p>\n

<\/p>\n
\n
if<\/span> __name__ == \"__main__\"<\/span>:
    for<\/span> i in<\/span> range(1<\/span>,26<\/span>):
        main(i)<\/code><\/pre>\n<\/section>\n

<\/p>\n

<\/p>\n
\u83b7\u53d6\u5b8c 500 \u672c\u4e66\u7684\u6570\u636e\u4e4b\u540e<\/p>\n

<\/p>\n
\u5b58\u5230 book.txt \u6587\u4ef6<\/p>\n

<\/p>\n

<\/p>\n
\n
def<\/span> write_item_to_file<\/span>(item)<\/span>:<\/span>
    print('\u5f00\u59cb\u5199\u5165\u6570\u636e ====> '<\/span> + str(item))
    with<\/span> open('book.txt'<\/span>, 'a'<\/span>, encoding='UTF-8'<\/span>) as<\/span> f:
        f.write(json.dumps(item, ensure_ascii=False<\/span>) + 'n'<\/span>)
        f.close()<\/code><\/pre>\n<\/section>\n

<\/p>\n

<\/p>\n
\u5b8c\u6210<\/p>\n

<\/p>\n
\u9879\u76ee\u8dd1\u8d77\u6765<\/p>\n

<\/p>\n
\"python\"<\/p>\n

<\/p>\n
\"python\"<\/p>\n

<\/p>\n
\u6253\u5f00\u6211\u4eec\u5b58\u50a8\u7684 book.txt \u770b\u770b<\/p>\n

<\/p>\n

<\/p>\n
\"python\"<\/p>\n

<\/p>\n
\u524d 500 \u672c\u4e66\u7684\u6570\u636e\u5c31\u88ab\u6211\u4eec\u62ff\u5230\u5566<\/p>\n

<\/p>\n
\"python\"<\/p>\n

<\/p>\n

<\/p>\n
\u672c\u7bc7\u5b8c<\/p>\n

<\/p>\n
\u5b8c\u6574\u4ee3\u7801\u5c0f\u5e05b\u5df2\u7ecf\u653e\u5230\u516c\u4f17\u53f7\u540e\u53f0\u5566<\/p>\n

<\/p>\n
\u9700\u8981\u7684\u670b\u53cb<\/p>\n

<\/p>\n
\u5728\u516c\u4f17\u53f7\u53d1\u9001<\/p>\n

<\/p>\n
500<\/strong><\/p>\n

<\/strong><\/p>\n
\u5373\u53ef\u83b7\u53d6<\/p>\n

<\/p>\n
ok<\/p>\n

<\/p>\n
\u54b1\u4eec\u4e0b\u56de\u518d\u89c1<\/p>\n

<\/p>\n

<\/p>\n
\"python\"<\/p>\n
\u626b\u4e00\u626b<\/span><\/strong><\/p>\n
\u5b66\u4e60 Python \u6ca1\u70e6\u607c<\/span><\/strong><\/p>\n

<\/span><\/strong><\/p>\n
\"python\"<\/p>\n

<\/p>\n

<\/p>\n
\u8fd1\u671f\u6587\u7ae0<\/p>\n

<\/p>\n
python\u722c\u866b03 | \u90a3\u4e2a\u53eb\u505aUrllib\u7684\u5e93\u8ba9\u6211\u4eec\u7684python\u5047\u88c5\u662f\u6d4f\u89c8\u5668<\/a>
<\/p>\n

<\/p>\n
python\u722c\u866b04 | \u957f\u6c5f\u540e\u6d6a\u63a8\u524d\u6d6a\uff0cRequests\u5e93\u628aurllib\u5e93\u62cd\u5728\u6c99\u6ee9\u4e0a<\/a>
<\/p>\n

<\/p>\n
python\u722c\u866b05 | \u5e74\u8f7b\u4eba\uff0c\u4e0d\u4f1a\u6b63\u5219\u8868\u8fbe\u5f0f\u4f60\u7761\u5f97\u7740\u89c9\uff1f\u6709\u70b9\u51fa\u606f\u6ca1\u6709\uff1f<\/a>
<\/p>\n

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<\/p>\n

<\/p>\n
\u652f\u6301\u5c0f\u5e05b\u7684\u5c31\u987a\u624b<\/p>\n
\"python\"\u70b9\u4e2a\u597d\u770b\u5427<\/p>\n
\n
\u539f\u6587\u59cb\u53d1\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7\uff08\u5b66\u4e60python\u7684\u6b63\u786e\u59ff\u52bf\uff09\uff1apython<\/a><\/p>\n<\/blockquote>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
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