{"id":1149,"date":"2018-03-27T22:18:44","date_gmt":"2018-03-27T14:18:44","guid":{"rendered":"http:\/\/zerobox.org\/notes\/?p=1149"},"modified":"2018-03-27T22:18:44","modified_gmt":"2018-03-27T14:18:44","slug":"%e6%9c%80%e6%9c%80%e7%ae%80%e5%8d%95%e7%9a%84python%e7%88%ac%e8%99%ab%e6%95%99%e7%a8%8b-%e7%88%ac%e5%8f%96%e7%99%be%e5%ba%a6%e7%99%be%e7%a7%91%e6%a1%88%e4%be%8b","status":"publish","type":"post","link":"http:\/\/zerobox.org\/notes\/1149.html","title":{"rendered":"\u6700\u6700\u7b80\u5355\u7684python\u722c\u866b\u6559\u7a0b&#8211;\u722c\u53d6\u767e\u5ea6\u767e\u79d1\u6848\u4f8b"},"content":{"rendered":"<p>http:\/\/blog.51cto.com\/11623741\/2091808<\/p>\n<div class=\"artical-title-list\">\n<div class=\"clear\"><\/div>\n<\/div>\n<div class=\"artical-content-bak main-content\">\n<div class=\"con artical-content editor-preview-side\">\n<p>from bs4 import BeautifulSoup<br \/>\nfrom urllib.request import urlopen<br \/>\nimport re<br \/>\nimport random<br \/>\nbase_url = &#8220;<a href=\"https:\/\/baike.baidu.com\/\" rel=\"nofollow\">https:\/\/baike.baidu.com<\/a>&#8221;<br \/>\n#\u5bfc\u5165\u76f8\u5173\u7684\u5305<\/p>\n<p>his = [&#8220;\/item\/%E7%BD%91%E7%BB%9C%E7%88%AC%E8%99%AB\/5162711&#8221;]<br \/>\n#\u521d\u59cb\u5316url<br \/>\n#\u5faa\u73af\u9009\u53d620\u767e\u5ea6\u767e\u79d1\u7684\u6570\u636e<br \/>\nfor i in range(20):<br \/>\nurl = base_url + his[-1]<br \/>\n#\u7ec4\u5408url<br \/>\nhtml = urlopen(url).read().decode(&#8216;utf-8&#8242;)<br \/>\n#\u83b7\u53d6\u7f51\u9875\u5185\u5bb9<br \/>\nsoup = BeautifulSoup(html, features=&#8217;lxml&#8217;)<br \/>\n#beautifulsoup\u901a\u8fc7lxml\u663e\u793a\u89e3\u6790\u7f51\u9875<\/p>\n<\/div>\n<p>print(i, soup.find(&#8216;h1&#8217;).get_text(), &#8216; url: &#8216;, base_url+his[-1])<br \/>\n#\u5c06\u4ee5\u4e0b\u4fe1\u606f\u6253\u5370\u51fa\u6765<\/p>\n<p>sub_urls = soup.find_all(&#8220;a&#8221;, {&#8220;target&#8221;: &#8220;_blank&#8221;, &#8220;href&#8221;: re.compile(&#8220;\/item\/(%.{2})+$&#8221;)})<br \/>\n#\u901a\u8fc7\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u9996\u5148\u627e\u5230a\u6807\u7b7e\uff0c\u7136\u540e\u9009\u53d6\u542b\u6709target\u7684\u5185\u5bb9\uff0c\u5e76\u4e14href \u5979\u7684\u5fc5\u987b\u5339\u914d\u4ee5\/item\/\u5f00\u5934\u7684\u5f62\u5f0f<\/p>\n<p>if len(sub_urls) != 0:<br \/>\nhis.append(random.sample(sub_urls, 1)[0][&#8216;href&#8217;])<br \/>\n#\u901a\u8fc7random\u7684sample\u65b9\u6cd5\u4ecesub-url\u4e2d\u6c34\u673a\u9009\u53bb\u4e00\u4e2a\u957f\u5ea6\u4e3a\u4e00\u7684list\u7684a\u6807\u7b7e\uff0c\u7136\u540e\u9009\u533a\u4ed6\u7684href\u5c5e\u6027<br \/>\nelse:<br \/>\n# no valid sub link found<br \/>\nhis.pop()<br \/>\n#\u5982\u679c\u5f53\u524d\u6ca1\u6709\u94fe\u63a5\uff0c\u9000\u51fa\u518d\u6765\uff0c\u7136\u540e\u518d\u9009\u62e9\u4e00\u4e2a\uff0c\u5728\u6765<br \/>\n![](http:\/\/i2.51cto.com\/images\/blog\/201803\/27\/2ec8773ff147c38305ae581297c51351.png?x-oss-process=image\/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)<code class=\"hljs php\"><\/code><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>http:\/\/blog.51cto.com\/11623741\/2091808 f &hellip;<\/p>\n<p class=\"read-more\"><a href=\"http:\/\/zerobox.org\/notes\/1149.html\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[248],"class_list":["post-1149","post","type-post","status-publish","format-standard","hentry","tag-python"],"views":3903,"_links":{"self":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/1149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/comments?post=1149"}],"version-history":[{"count":0,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/1149\/revisions"}],"wp:attachment":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/media?parent=1149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/categories?post=1149"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/tags?post=1149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}