如何使用 Selenium 在 Instagram 弹出框架中向下滚动

How to scroll down in an instagram pop-up frame with Selenium

我有一个 python 脚本使用 selenium 转到给定的 Instagram 个人资料并遍历用户的关注者。在 Instagram 网站上,当点击查看关注者列表时,会打开一个弹出窗口,其中列出了帐户(这里是 a screenshot of the site)

但是在视觉和 html 中,只显示了 12 个帐户。为了看到更多必须向下滚动,所以我尝试使用 Keys.PAGE_DOWN 输入来执行此操作。

from selenium import webdriver
from selenium.common.exceptions         import TimeoutException
from selenium.webdriver.support.ui      import WebDriverWait 
from selenium.webdriver.support         import expected_conditions as EC
from selenium.webdriver.chrome.options  import Options
from selenium.webdriver.common.keys     import Keys
import time 

...

username = 'Username'
password = 'Password'
message  = 'blahblah'
tryTime  = 2

#create driver and log in
driver = webdriver.Chrome()
logIn(driver, username, password, tryTime)

#gets rid of preference pop-up
a = driver.find_elements_by_class_name("HoLwm")
a[0].click()

#go to profile
driver.get("https://www.instagram.com/{}/".format(username))

#go to followers list
followers = driver.find_element_by_xpath("//a[@href='/{}/followers/']".format(username))
followers.click()
time.sleep(tryTime) 

#find all li elements in list
fBody  = driver.find_element_by_xpath("//div[@role='dialog']")
fBody.send_keys(Keys.PAGE_DOWN) 

fList  = fBody.find_elements_by_tag("li")
print("fList len is {}".format(len(fList)))

time.sleep(tryTime)

print("ended")
driver.quit()

当我尝试 运行 时,出现以下错误:

Message: unknown error: cannot focus element

我知道这可能是因为我为 fBody 使用了错误的元素,但我不知道哪个才是正确的。有谁知道我应该将 PAGE_DOWN 键发送到哪个元素,或者是否有另一种方法来加载帐户?

非常感谢任何帮助!

您正在查找的元素是 //div[@class='isgrP']Keys.PAGE_DOWN 不适用于可滚动的 div。

你的变量fList保持旧值,滚动后需要重新查找元素。

#find all li elements in list
fBody  = driver.find_element_by_xpath("//div[@class='isgrP']")
scroll = 0
while scroll < 5: # scroll 5 times
    driver.execute_script('arguments[0].scrollTop = arguments[0].scrollTop + arguments[0].offsetHeight;', fBody)
    time.sleep(tryTime)
    scroll += 1

fList  = driver.find_elements_by_xpath("//div[@class='isgrP']//li")
print("fList len is {}".format(len(fList)))

print("ended")
#driver.quit()

如果您添加带范围的迭代 (for),以上代码可以正常工作 对于我在范围 (1, 4) 中: 尝试:

            #find all li elements in list
            fBody  = self.driver.find_element_by_xpath("//div[@class='isgrP']")
            scroll = 0
            while scroll < 5: # scroll 5 times
                self.driver.execute_script('arguments[0].scrollTop = arguments[0].scrollTop + arguments[0].offsetHeight;', fBody)
                time.sleep(2)
                scroll += 1

            fList  = self.driver.find_elements_by_xpath("//div[@class='isgrP']//li")
            print("fList len is {}".format(len(fList)))

        except Exception as e:
            print(e, "canot scrol")

        try:
            #get tags with a
            hrefs_in_view = self.driver.find_elements_by_tag_name('a')
            # finding relevant hrefs
            hrefs_in_view = [elem.get_attribute('title') for elem in hrefs_in_view]

            [pic_hrefs.append(title) for title in hrefs_in_view if title not in pic_hrefs]
            print("Check: pic href length " + str(len(pic_hrefs)))

        except Exception as tag:
            print(tag, "can not find tag")

因此,即使 while 循环未命中,for 循环也可以使滚动成为可能