我想从什么应用程序中抓取所有的元素，但是我对selenium python有问题
我想从什么应用程序中抓取所有的元素，但是我对selenium python有问题
提问于 2021-10-01 13:06:08
我想从什么应用程序中抓取所有的元素，但是我对selenium python有问题，这是我的代码：
from selenium import webdriver
from selenium.webdriver.common import keys
import time
driver = webdriver.Chrome("path/to/chromedriver")
driver.get("https://web.whatsapp.com/")
time.sleep(10)
input("Qr Code: ")
driver.implicitly_wait(10)
numbers = driver.find_elements_by_class_name('_ccCW')
for n in numbers:
print(n.text)我的脚本只抓取17个条目，whatsapp有3个类_ccCW FqYAR i0jNr，每个类中有一个有17个条目，所以如何刮掉这三个类
回答 4
Stack Overflow用户
回答已采纳
发布于 2021-10-02 02:45:15
相同的WhatsApp元素可以使用2/3不同的xpath进行访问，因此对一个元素使用单个xpath不会返回文本alaways。
一些chrome扩展将有助于很好地识别xpath。我用了4个分机。
Navigation
- TruePath
- XPath
- HTML DOM
- xPath Finder
以下是whatsapp的固定元素
chat_search_box = "/html/body/div[1]/div[1]/div[1]/div[3]/div/div[1]/div/label/div/div[2]"
selected_profile_header_name = "//HEADER[@class='_23P3O']//SPAN[@class='_ccCW FqYAR i0jNr']"
chat_name = "/html/body/div[1]/div[1]/div[1]/div[4]/div[1]/header/div[2]/div[1]/div/span"
footer = "/html/body/div[1]/div[1]/div[1]/div[4]/div[1]/footer/div[1]"
footer_textbox = "/html/body/div[1]/div[1]/div[1]/div[4]/div[1]/footer/div[1]/div[2]/div/div[1]/div/div[2]"
msg_nav_arrow = "/html/body/div[1]/div[1]/div[1]/div[4]/div[1]/div[3]/div/div[1]/span/div/span[2]"下面的xpath用于访问左侧窗格中的聊天名称。这些都是固定的，但div数是动态的。I= div # chat/group
pane_base = "(//div[@id='pane-side']//div[@class='_3OvU8'])"
pane_search_parent = lambda x : pane_base + "[" + str(x) + "]"
pane_group_last_sender = lambda i: pane_search_parent(i) + "//span[@class='FqYAR i0jNr']"
pane_user_sms = lambda i : pane_search_parent(i) + "//span[@class='_ccCW FqYAR i0jNr']"
pane_sms_date = lambda i: pane_search_parent(i) + "//div[@class='_3vPI2']/div[@class='_1i_wG']"
pane_notif = lambda i: pane_search_parent(i) + "//span[@class='_23LrM']"
pane_username = lambda i: pane_search_parent(i) + "//div[@class='zoWT4']"因为从chat访问消息是最困难的部分，相同的元素具有多个xpath。
msg_base = "(//div[@id='main']//div[@class='y8WcF']/div)[2]" #u have to change [2] with [n] to read specific msg
#u could find SENDER from any of 3 xpath depending on msg type.. sometime msg could be quoted text or first post or forwared msg or could be with image.
SENDER = [msg_base + "/div/div/div/div[1]/span[1]", msg_base + "//span[@class='a71At _3xSVM i0jNr']", msg_base + "//span[@class='_1BUvv']"]
#following item follows same as SENDER. please add 'msg_base' to each list items.
SENDER_NAME = ['/div/div/div/div[1]/span[2]']
SENDER_TEXT = ['/descendant::div/span/span[1]','//span[@class="i0jNr selectable-text copyable-text"]']
QUOTED_TEXT = ['/div/div/div/div[2]/div[1]/div/div/div/div/div[2]',"//span[@class='quoted-mention i0jNr']",'/div/div/div/div[1]/div[1]/div/div/div/div/div[2]']
QUOTED_SENDER = ['/div/div/div/div[2]/div[1]/div/div/div/div/div[1]/span[1]','/div/div/div/div[1]/div[1]/div/div/div/div/div[1]/span',"//span[@class='a71At i0jNr']"]
TIME = ["//span[@class='kOrB_']",'/descendant::div[last()]']请随时询问有关whatsapp使用python selenium抓取的任何问题。
Stack Overflow用户
发布于 2021-10-01 13:09:44
如果类名为_ccCW、FqYAR和i0jNr，则尝试
classes_to_get = ["_ccCW", "FqYAR", "i0jNr"]
for kls in classes_to_get:
numbers = driver.find_elements_by_class_name(kls)
for n in numbers:
print(n.text)Stack Overflow用户
发布于 2021-10-01 13:22:29
尝试使用这个xpath：
//div[@role='gridcell']//span[@title]numbers = driver.find_elements_by_xpath("//div[@role='gridcell']//span[@title]")
for n in numbers:
print(n.text)
#print(n.get_attribute("innerText")) # You can also use this line to print the text.页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/69406417
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