如何用python selenium点击下载

Question

我尝试通过selenium（python）从GoogleTrend下载CSV数据。

在前面，我尝试打印源页和提取数据，我以后想要。它在一段时间内起作用，但现在不起作用了。

导入sys导入时间

从selenium导入webdriver.Common.Keys导入selenium.webdriver.Common.Action_Chains导入selenium.webdriver.Support.UI导入Select from selenium.webdriver.Support.UI导入webdriver Wait from selenium.webdriver.Common.By导入By from selenium.webdriver.Support导入expected_conditions为EC

def run_text_extract(search_word):

        try:
                     print(search_word)


                     driver = webdriver.Firefox('/home/noah/Desktop/Google_Trend_downloader/chromedriver/geckodriver')
         #            driver = webdriver.Chrome('/home/noah/Desktop/Google_Trend_downloader/chromedriver')

                     driver.get("https://trends.google.com/trends/explore?date=all&geo=TH&q="+search_word)
                     driver.find_element_by_xpath('html/body/div[2]/div[2]/div/md-content/div/div/div[1]/trends-widget/ng-include/widget/div/div/div/widget-actions/div/button[1]').click()



                     try: 

                          driver.manage().deleteAllCookies()
                          clear_cache(driver)

                     except TimeoutException as ex:
                            isrunning = 0
                            print("Exception has been thrown. " + str(ex))
                            print("Timeout line is", line ,".")
                            driver.close()

                     except Exception:
                            print ("Here 5")
                            pass

                     time.sleep(2) 
                     driver.close()
                     print("======== END_OF_FILE ===============")


        except:
               pass

如果name=='main':run_text_extract(sys.argv[1])time.sleep(8)#run_text_extract()

Answer 1

我已经导航到您提供的链接。如果你搜索任何术语，你可以看到下载csv按钮链接将出现在右侧。但将有3个下载csv按钮链接与相同的类或css选择器是存在的。所以您需要收集所有元素并循环遍历，以便您可以单击特定的元素。在您的情况下，我假设您希望单击第一个元素。所以下面的代码应该可以工作。如果希望第二个或第三个元素单击相应更改索引。

def run_text_extract(search_word):
    from selenium import webdriver
    from selenium.webdriver.firefox.firefox_profile import FirefoxProfile
    import time
    profile = webdriver.FirefoxProfile()
    profile.set_preference("browser.download.folderList", 2)
    profile.set_preference("browser.download.manager.showWhenStarting", False)
    profile.set_preference("browser.download.dir", 'C:\\Python27')
    profile.set_preference("browser.helperApps.neverAsk.saveToDisk", "text/csv")
    driver = webdriver.Firefox(firefox_profile=profile,executable_path=r'C:\\Python27\\geckodriver.exe')
    driver.get("https://trends.google.com/trends/explore?date=all&geo=TH&q="+ search_word)
    time.sleep(7)
    lst = driver.find_elements_by_css_selector(".widget-actions-item.export")
    lst[0].click()

run_text_extract("selenium")