很疑惑ccss1找的到底是什么（纯新手，零基础）

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Traceback (most recent call last): File "run.py", line 22, in a.ready() File "……\Class_Npels.py", line 63, in ready self.start(i) File "……\Class_Npels.py", line 77, in start self.driver.find_element_by_css_selector(self.ccss1).click() File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 509, in find_element_by_css_selector return self.find_element(by=By.CSS_SELECTOR, value=css_selector) File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 843, in find_element 'value': value})['value'] File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 308, in execute self.error_handler.check_response(response) File "……\Programs\Python\Python35\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"css selector","selector":"#menu-container > ul > li:nth-child(3) > a"} (Session info: chrome=71.0.3578.98) (Driver info: chromedriver=2.43.600210 (68dcf5eebde37173d4027fa8635e332711d2874a),platform=Windows NT 10.0.17134 x86_64)

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更新驱动就已经耗去我半条命了，这个＃menu-container 我真的看不懂了

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以及，我在网页源代码里面好像搜不到ccss1、ccss2和css里面的东西，所以是id的问题?还是什么？

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兄弟 期末不用考试吗？

lkncyjn2013 notifications@github.com于2018年12月28日 周五下午1:23写道：

以及，我在网页源代码里面好像搜不到ccss1、ccss2和css里面的东西，所以是id的问题?还是什么？

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复习ing

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我其实已经忘了，如果没记错的话网课是分两部分的一个听说一个读写，这两个css对应两个部分在网页上的位置。 https://github.com/ETCartman/Class_Npels/blob/3503e9c5cea0e48cef0593db61e66aecae06197d/Class_Npels.py#L22-L23

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只找到了这个

    <div class="class_container">
        <div class="class_mag_3">

                    <ul>
                        <a onclick="location.href='CourseIndex.aspx?c=2018-0007-0013&m=College_English_NEW_Century_SecEdition_Integration_1'">
                            <li class="class_mag_3_1">
                                <img src="http://222.200.97.180/course/College_English_NEW_Century_SecEdition_Integration_1/cover.jpg"></li>
                            <li class="class_mag_3_2"> 新世纪大学英语（第二版）综合教程第一册</li>
                            <li class="progress_1"><span id="sp_2018-0007-0013_College_English_NEW_Century_SecEdition_Integration_1" style='width: 37%'></span></li>
                            <li class="class_mag_1_4"> 新世纪大学英语（第二版）综合教程第一册</li>
                        </a>
                    </ul>

                    <ul>
                        <a onclick="location.href='CourseIndex.aspx?c=2018-0007-0013&m=College_English_NEW_Century_Video_ThirdEdition_1'">
                            <li class="class_mag_3_1">
                                <img src="http://222.200.97.180/course/College_English_NEW_Century_Video_ThirdEdition_1/cover.jpg"></li>
                            <li class="class_mag_3_2"> 新世纪大学英语（第二版）视听说教程（3rd Edition）第一册</li>
                            <li class="progress_1"><span id="sp_2018-0007-0013_College_English_NEW_Century_Video_ThirdEdition_1" style='width: 37%'></span></li>
                            <li class="class_mag_1_4"> 新世纪大学英语（第二版）视听说教程（3rd Edition）第一册</li>
                        </a>
                    </ul>

        </div>
    </div>

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改成这样 self.ccss1 = '#class_container > div > ul:nth-child(1) > a' self.ccss2 = '#class_container > div > ul:nth-child(2) > a' 弹出 Traceback (most recent call last): File "run.py", line 22, in a.ready() File "……\Class_Npels-master\Class_Npels.py", line 63, in ready self.start(i) File "……\Class_Npels-master\Class_Npels.py", line 72, in start self.driver.find_element_by_css_selector(self.clicks[i]).click() File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\webelement.py", line 80, in click self._execute(Command.CLICK_ELEMENT) File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\webelement.py", line 501, in _execute return self._parent.execute(command, params) File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 308, in execute self.error_handler.check_response(response) File "……\Python\Python35\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.ElementNotVisibleException: Message: element not interactable

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明年再说，谢谢这位兄弟

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ok