python selenium點擊第n個元素

Question

下面是檢查代碼，當鼠標位於圖像上方時，基本上我想要點擊圖像....

<ul id="product-list">

    <li class="product one-col new">
        <ul>
            <li class="image" title="sample image">
                <a href="#product/1d77e790-f74a-3859-97db-c513cbece39c">
                    <img width="" height="" alt="" src="/content/images/1.jpg"></img>
                    <span class="new"> … </span>
                    <span class="hover"></span>
                </a>
                <p class="retailer"> … </p>
                <p class="brand"></p>
            </li>
            <li class="price"> … </li>
            <li class="name" title="sample image"> … </li>
            <li class="first-seen"> … </li>
        </ul>
    </li>
    <li class="product one-col new"> … </li>
    <li class="product one-col new"> … </li>
    <li class="product one-col new"> … </li>

我正在使用python selenium，並嘗試了下面的單擊span（懸停）鏈接

browser.find_element_by_css_selector("ul#product-list > :first-child > ul > li.image > a > span.hover ").click

但這不起作用......任何想法？

更新 ：

browser.find_element_by_css_selector("ul#product-list > :first-child > ul > li.image > a > span.hover ").click()


 File "/usr/lib/python2.7/site-packages/selenium-2.35.0-py2.7.egg/selenium/webdriver/remote/errorhandler.py", line 164, in check_response
    raise exception_class(message, screen, stacktrace)
ElementNotVisibleException: Message: u'Element is not currently visible and so may not be interacted with' ; Stacktrace: 
    at fxdriver.preconditions.visible (file:///tmp/tmp6Pgi9F/extensions/fxdriver@googlecode.com/components/command_processor.js:8231)
    at DelayedCommand.prototype.checkPreconditions_ (file:///tmp/tmp6Pgi9F/extensions/fxdriver@googlecode.com/components/command_processor.js:10823)
    at DelayedCommand.prototype.executeInternal_/h (file:///tmp/tmp6Pgi9F/extensions/fxdriver@googlecode.com/components/command_processor.js:10840)
    at DelayedCommand.prototype.executeInternal_ (file:///tmp/tmp6Pgi9F/extensions/fxdriver@googlecode.com/components/command_processor.js:10845)
    at DelayedCommand.prototype.execute/< (file:///tmp/tmp6Pgi9F/extensions/fxdriver@googlecode.com/components/command_processor.js:10787) 

更新：

這也行不通

browser.find_element_by_css_selector("ul#product-list > :first-child > ul > li.image > a ").click()

更新 ：

還嘗試了動作鏈，鼠標點擊..但沒有運氣..

element = browser.find_element_by_css_selector("ul#product-list > :first-child > ul > li.image")
    hov = ActionChains(browser).move_to_element(element)
    hov.click()

解決：最后這個工作......

element_to_hover_over = driver.find_element_by_css_selector("ul#product-list > :first-child ")
hover = ActionChains(driver).move_to_element(element_to_hover_over)
hover.perform()
if "" == driver.find_element_by_css_selector("span.hover").text:
    driver.find_element_by_css_selector("span.hover").click()

Answer 1

你的代碼缺失() 。 如果沒有() ，則不會調用click方法。

browser.find_element_by_css_selector("ul...span.hover ").click()
#                                                             ^^

---

element = browser.find_element_by_css_selector("ul#product-list > :first-child > ul > li.image > a > span.hover ")
browser.execute_script("arguments[0].innerText = 'asdf';", element)
element.click()

Answer 2

這工作：

element_to_hover_over = driver.find_element_by_css_selector("ul#product-list > :first-child ")
hover = ActionChains(driver).move_to_element(element_to_hover_over)
hover.perform()
if "" == driver.find_element_by_css_selector("span.hover").text:
    driver.find_element_by_css_selector("span.hover").click()