Instagram代码提要像主页3帖子

Question

此函数def get_heart_icon_X path（post_num）错误 pl z帮助运行代码

我正在尝试为Instagram编写自己的bot python selenium bot，以进行一些实验。我成功登录并喜欢在搜索栏中的首页供稿页面上，将我带到以下网页：网页

但是我不知道如何喜欢提要中的照片，我尝试使用XPath和以下路径进行搜索：“ // [@ id =” reactroot“] / section / main / article / div1 / div / div / div / div1 / div1 / a / div”但这没有用，有人有想法吗？

from selenium import webdriver
chrome_path = r"C:\---\chromedriver.exe"
import time



class InstagramBot:

    def __init__(self, username,password):
        self.username = username
        self.password = password
        self.driver = webdriver.Chrome(chrome_path)


    def closeBrowser(self):
        self.driver.close()

    def login(self):
        driver = self.driver
        driver.get("https://www.instagram.com/")
        time.sleep(2)
        login_button = driver.find_element_by_xpath("""//*[@id="react-root"]/section/main/article/div[2]/div[2]/p/a""")
        login_button.click()
        time.sleep(2)
        user_name_elem = driver.find_element_by_xpath("//input[@name='username']")
        user_name_elem.clear()
        user_name_elem.send_keys(self.username)
        passwwarword_elem = driver.find_element_by_xpath("//input[@name='password']")
        passwwarword_elem.clear()
        passwwarword_elem.send_keys(self.password)
        time.sleep(2)
        nextButton = driver.find_element_by_xpath("""//*[@id="react-root"]/section/main/div/article/div/div[1]/div/form/div[3]/button""")
        nextButton.click()
        time.sleep(2)
        offer_elem = driver.find_element_by_xpath ("""//div/h2[text()='Turn on Notifications']""")
        dismiss_elem = driver.find_element_by_xpath ("""//button[text()='Not Now']""" )
        dismiss_elem.click()
        time.sleep(2)
        nextButt = driver.find_element_by_class_name("""//*[@id="react-root"]/section/main/section/div[1]/div[1]/div/article[1]/div[2]/section[1]/span[1]/button/span""")
        nextButt.click()
        time.sleep(2)

    def get_heart_icon_xpath(post_num):
            """
             Return heart icon xpath corresponding to n-post.
              """
    if post_num == 1:
        return 'xpath=//button/span'
    else:
         return f'xpath=//article[{post_num}]/div[2]/section/span/button/span'

    try:
            # Get xpath of heart icon of the 19th post.
        my_xpath = get_heart_icon_xpath(19)
        heart_icon = driver.find_element_by_xpath(my_xpath)
        heart_icon.click()
        print("Task executed successfully")
    except Exception:
                print("An error occurred")



andreyIG = InstagramBot("usr","pasw")
andreyIG.login()
andreyIG.get_heart_icon_xpath(19)