我正在尝试执行这个脚本，但我不知道为什么它会同时抛出“Null”和重复值！我的目标是放置所需的值并单击搜索按钮，从页面中获取所有“href”并收集数据，这是工作正常，但同时提供“Null”和重复值！我不知道我在这里实际上错过了什么。

import scrapy
from scrapy_selenium import SeleniumRequest
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
import time
from selenium.webdriver.chrome.service import Service
from webdriver_manager.chrome import ChromeDriverManager

class RightMove2Spider(scrapy.Spider):
    name = 'rightmove2'

    start_urls = ["https://www.rightmove.co.uk/property-for-sale/search.html?searchLocation=London&useLocationIdentifier=true&locationIdentifier=REGION%5E87490&buy=For+sale"]

    def __init__(self, name=None,**kwargs):
        chrome_options = Options()
        driver = webdriver.Chrome(service=Service(ChromeDriverManager().install()))
        driver.set_window_size(1920, 1080)
        driver.get("https://www.rightmove.co.uk/property-for-sale/search.html?searchLocation=London&useLocationIdentifier=true&locationIdentifier=REGION%5E87490&buy=For+sale")
        price_range = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "(//option[@value='2000000'])[2]")))
        price_range.click()
        time.sleep(1)

        bedroom_range = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "(//option[@value='5'])[1]")))
        bedroom_range.click()
        time.sleep(1)

        tick_box = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//span[@class='tickbox--indicator']")))
        tick_box.click()
        time.sleep(1)

        find_properties_btn = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.XPATH, "//button[@id='submit']")))
        find_properties_btn.click()
        time.sleep(3)

        self.property_xpath = driver.find_elements(By.XPATH, "//*[@class='l-searchResult is-list']/div/div/div[4]/div[1]/div[2]/a")

        # driver.close()
        super().__init__(name,**kwargs)

    def parse(self, response):
        for el in self.property_xpath:
            href= el.get_attribute('href')
            time.sleep(1)
            yield SeleniumRequest(
                url=href,
                wait_time=3)

            yield {
                'Title': response.xpath("//h1[@itemprop='streetAddress']/text()").get(),
                'Price': response.xpath("//div[@class='_1gfnqJ3Vtd1z40MlC0MzXu']/span/text()").get(),
                'Agent Name': response.xpath("//div[@class='RPNfwwZBarvBLs58-mdN8']/a/text()").get(),
                'Agent Address': response.xpath("//div[@class='OojFk4MTxFDKIfqreGNt0']/text()").get(),
                'Agent Telephone': response.xpath("//a[@class='_3E1fAHUmQ27HFUFIBdrW0u']/text()").get(),
                'Added on': response.xpath("//div[@class='_2nk2x6QhNB1UrxdI5KpvaF']/text()").get(),
                'Links': response.url
            }

        for x in range(24, 1008, 24):
            abs_url = f'https://www.rightmove.co.uk/property-for-sale/find.html?locationIdentifier=REGION%5E87490&minBedrooms=5&maxPrice=2000000&index={x}&propertyTypes=&includeSSTC=true&mustHave=&dontShow=&furnishTypes=&keywords='

            yield SeleniumRequest(
                url= abs_url,
                callback=self.parse
            )

输出

{"Title": null, "Price": null, "Agent Name": null, "Agent Address": null, "Agent Telephone": null, "Added on": null, "Links": "https://www.rightmove.co.uk/property-for-sale/search.html?searchLocation=London&useLocationIdentifier=true&locationIdentifier=REGION%5E87490&buy=For+sale"},
{"Title": "Combwell Crescent, Abbey Wood, London", "Price": "£450,000", "Agent Name": "Anthony Martin Estate Agents, Bexleyheath", "Agent Address": "2 Pickford Lane,\r\nBexleyheath,\r\nDA7 4QW", "Agent Telephone": "020 8012 7475", "Added on": "Added on 30/11/2021", "Links": "https://www.rightmove.co.uk/properties/117050312"},
{"Title": null, "Price": null, "Agent Name": null, "Agent Address": null, "Agent Telephone": null, "Added on": null, "Links": "https://www.rightmove.co.uk/property-for-sale/search.html?searchLocation=London&useLocationIdentifier=true&locationIdentifier=REGION%5E87490&buy=For+sale"},
{"Title": null, "Price": null, "Agent Name": null, "Agent Address": null, "Agent Telephone": null, "Added on": null, "Links": "https://www.rightmove.co.uk/property-for-sale/search.html?searchLocation=London&useLocationIdentifier=true&locationIdentifier=REGION%5E87490&buy=For+sale"},
{"Title": "Combwell Crescent, Abbey Wood, London", "Price": "£450,000", "Agent Name": "Anthony Martin Estate Agents, Bexleyheath", "Agent Address": "2 Pickford Lane,\r\nBexleyheath,\r\nDA7 4QW", "Agent Telephone": "020 8012 7475", "Added on": "Added on 30/11/2021", "Links": "https://www.rightmove.co.uk/properties/117050312"},
{"Title": null, "Price": null, "Agent Name": null, "Agent Address": null, "Agent Telephone": null, "Added on": null, "Links": "https://www.rightmove.co.uk/property-for-sale/search.html?searchLocation=London&useLocationIdentifier=true&locationIdentifier=REGION%5E87490&buy=For+sale"},
{"Title": "Combwell Crescent, Abbey Wood, London", "Price": "£450,000", "Agent Name": "Anthony Martin Estate Agents, Bexleyheath", "Agent Address": "2 Pickford Lane,\r\nBexleyheath,\r\nDA7 4QW", "Agent Telephone": "020 8012 7475", "Added on": "Added on 30/11/2021", "Links": "https://www.rightmove.co.uk/properties/117050312"},