python - 一旦通过 Selenium 和 Python 调用 click() 方法，控制台就会被 DEBUG 消息淹没

Question

我正在使用 selenium firefox，下面的代码生成了我需要的内容，但在加载完成后，它生成了大量调试消息。我做错了什么？

    def count_list(self, busienss_seller_url):
    seller_url = busienss_seller_url
    driver.get(seller_url)
    while True:
        load_content = driver.find_element_by_xpath('/html/body/div[5]/div[3]/div/button')
        try:
            load_content.click()
            time.sleep(3)
        except:
            print('Finish loading...')
            break
    links = driver.find_elements_by_class_name("title-link")
    number_of_links = []
    for link in links:
        ad_links = link.get_attribute('href')
        number_of_links.append(ad_links)
    driver.close()
    'count ads - return how many links are in the list'
    return len(number_of_links)

下面的调试消息生成了 x100+，看看 2018-09-04 22:36:57 [selenium.webdriver.remote.remote_connection] DEBUG: POST 加载了一堆 JavaScript。我该如何修复它或者我可以忽略它吗？

2018-09-04 22:36:57 [urllib3.connectionpool] DEBUG: http://127.0.0.1:50910 "POST /session/7229021d-dce2-4653-bea9-7cd29732d83a/execute/sync HTTP/1.1" 200 114
2018-09-04 22:36:57 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2018-09-04 22:36:57 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:50910/session/7229021d-dce2-4653-bea9-7cd29732d83a/execute/sync {"script": "return (function(){return function(){var d=this;function f(a){return\"string\"==typeof a};function h(a,b){this.code=a;this.a=l[a]||m;this.message=b||\"\";a=this.a.replace(/((?:^|\\s+)[a-z])/g,function(a){return a.toUpperCase().replace(/^[\\s\\xa0]+/g,\"\")});b=a.length-5;if(0>b||a.indexOf(\"Error\",b)!=b)a+=\"Error\";this.name=a;a=Error(this.message);a.name=this.name;this.stack=a.stack||\"\"}\n(function(){var a=Error;function b(){}b.prototype=a.prototype;h.b=a.prototype;h.prototype=new b;h.prototype.constructor=h;h.a=function(b,c,g){for(var e=Array(arguments.length-2),k=2;k<arguments.length;k++)e[k-2]=arguments[k];return a.prototype[c].apply(b,e)}})();var m=\"unknown error\",l={15:\"element not selectable\",11:\"element not visible\"};l[31]=m;l[30]=m;l[24]=\"invalid cookie domain\";l[29]=\"invalid element coordinates\";l[12]=\"invalid element state\";l[32]=\"invalid selector\";l[51]=\"invalid selector\";\nl[52]=\"invalid selector\";l[17]=\"javascript error\";l[405]=\"unsupported operation\";l[34]=\"move target out of bounds\";l[27]=\"no such alert\";l[7]=\"no such element\";l[8]=\"no such frame\";l[23]=\"no such window\";l[28]=\"script timeout\";l[33]=\"session not created\";l[10]=\"stale element reference\";l[21]=\"timeout\";l[25]=\"unable to set cookie\";l[26]=\"unexpected alert open\";l[13]=m;l[9]=\"unknown command\";h.prototype.toString=function(){return this.name+\": \"+this.message};var n;a:{var p=d.navigator;if(p){var q=p.userAgent;if(q){n=q;break a}}n=\"\"}function r(a){return-1!=n.indexOf(a)};function t(a,b){for(var e=a.length,c=f(a)?a.split(\"\"):a,g=0;g<e;g++)g in c&&b.call(void 0,c[g],g,a)};function v(){return r(\"iPhone\")&&!r(\"iPod\")&&!r(\"iPad\")};function w(){return(r(\"Chrome\")||r(\"CriOS\"))&&!r(\"Edge\")};var x=r(\"Opera\"),y=r(\"Trident\")||r(\"MSIE\"),z=r(\"Edge\"),A=r(\"Gecko\")&&!(-1!=n.toLowerCase().indexOf(\"webkit\")&&!r(\"Edge\"))&&!(r(\"Trident\")||r(\"MSIE\"))&&!r(\"Edge\"),aa=-1!=n.toLowerCase().indexOf(\"webkit\")&&!r(\"Edge\");function B(){var a=d.document;return a?a.documentMode:void 0}var C;\na:{var D=\"\",E=function(){var a=n;if(A)return/rv\\:([^\\);]+)(\\)|;)/.exec(a);if(z)return/Edge\\/([\\d\\.]+)/.exec(a);if(y)return/\\b(?:MSIE|rv)[: ]([^\\);]+)(\\)|;)/.exec(a);if(aa)return/WebKit\\/(\\S+)/.exec(a);if(x)return/(?:Version)[ \\/]?(\\S+)/.exec(a)}();E&&(D=E?E[1]:\"\");if(y){var F=B();if(null!=F&&F>parseFloat(D)){C=String(F);break a}}C=D}var G;var H=d.document;G=H&&y?B()||(\"CSS1Compat\"==H.compatMode?parseInt(C,10):5):void 0;var ba=r(\"Firefox\"),ca=v()||r(\"iPod\"),da=r(\"iPad\"),I=r(\"Android\")&&!(w()||r(\"Firefox\")||r(\"Opera\")||r(\"Silk\")),ea=w(),J=r(\"Safari\")&&!(w()||r(\"Coast\")||r(\"Opera\")||r(\"Edge\")||r(\"Silk\")||r(\"Android\"))&&!(v()||r(\"iPad\")||r(\"iPod\"));function K(a){return(a=a.exec(n))?a[1]:\"\"}(function(){if(ba)return K(/Firefox\\/([0-9.]+)/);if(y||z||x)return C;if(ea)return v()||r(\"iPad\")||r(\"iPod\")?K(/CriOS\\/([0-9.]+)/):K(/Chrome\\/([0-9.]+)/);if(J&&!(v()||r(\"iPad\")||r(\"iPod\")))return K(/Version\\/([0-9.]+)/);if(ca||da){var a=/Version\\/(\\S+).*Mobile\\/(\\S+)/.exec(n);if(a)return a[1]+\".\"+a[2]}else if(I)return(a=K(/Android\\s+([0-9.]+)/))?a:K(/Version\\/([0-9.]+)/);return\"\"})();var L,M=function(){if(!A)return!1;var a=d.Components;if(!a)return!1;try{if(!a.classes)return!1}catch(g){return!1}var 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2018-09-04 22:36:57 [urllib3.connectionpool] DEBUG: http://127.0.0.1:50910 "POST /session/7229021d-dce2-4653-bea9-7cd29732d83a/execute/sync HTTP/1.1" 200 150
2018-09-04 22:36:57 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2018-09-04 22:36:57 [selenium.webdriver.remote.remote_connection] DEBUG: DELETE http://127.0.0.1:50910/session/7229021d-dce2-4653-bea9-7cd29732d83a/window {}
2018-09-04 22:37:00 [urllib3.connectionpool] DEBUG: http://127.0.0.1:50910 "DELETE /session/7229021d-dce2-4653-bea9-7cd29732d83a/window HTTP/1.1" 200 13
2018-09-04 22:37:00 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
Ad Count: 670

Answer 1

很难猜测这些消息的原因，但从日志中可以清楚地看出:

• 您已将WebDriver实例配置为在控制台上打印DEBUG消息，或者它是默认配置。

• 粗略的click()事件会触发同步JavaScript的执行，如下所示:

  "POST /session/7229021d-dce2-4653-bea9-7cd29732d83a/execute/sync HTTP/1.1" 200 150
  

• JavaScript 的执行是在当前选定的框架或窗口的上下文中进行的。

• 提供的脚本片段将作为匿名函数的主体执行。
• 在脚本中，使用 document 来引用当前文档。
• 脚本执行完成后，局部变量将不可用，但全局变量将持续存在。

结论

如果您想消除控制台上的DEBUG消息，您必须配置传递 key 的WebDriver实例，值对如下:

browser = webdriver.Ie(capabilities=cap, executable_path="C:\\Utility\\BrowserDrivers\\IEDriverServer.exe", log_level='TRACE', log_file='./Logs/IEDriver_Arg.log')