python - 我的抓取工具无法从网页中获取所有项目

Question

我结合 selenium 在 python 中编写了一些代码来解析网页中的不同产品名称。如果使浏览器向下滚动，则很少有加载更多按钮可见。如果使页面向下滚动直到没有加载更多按钮可供单击，则该网页将显示其全部内容。我的刮刀似乎做得很好，但我没有得到所有的结果。该页面中大约有 200 种产品，但我从中得到了 90 种。我应该在我的爬虫中带来什么改变才能得到它们？提前致谢。

我正在处理的网页:Page_Link

这是我正在尝试的脚本:

import time
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()
driver.get("put_above_url_here")
wait = WebDriverWait(driver, 10)

page = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR,".listing_item")))
for scroll in range(17):
    page.send_keys(Keys.PAGE_DOWN)
    time.sleep(2)
    try:
        load = driver.find_element_by_css_selector(".lm-btm")
        load.click()
    except Exception:
        pass

for item in wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, "[id^=item_]"))):
    name = item.find_element_by_css_selector(".pro-name.el2").text
    print(name)
driver.quit()

Answer 1

尝试下面的代码来获取所需的数据:

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()
driver.get("https://www.purplle.com/search?q=hair%20fall%20shamboo")
wait = WebDriverWait(driver, 10)

header = driver.find_element_by_tag_name("header")
driver.execute_script("arguments[0].style.display='none';", header)

while True:

    try:
        page = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, ".listing_item")))
        driver.execute_script("arguments[0].scrollIntoView();", page)
        page.send_keys(Keys.END)
        load = wait.until(EC.element_to_be_clickable((By.PARTIAL_LINK_TEXT, "LOAD MORE")))
        driver.execute_script("arguments[0].scrollIntoView();", load)
        load.click()
        wait.until(EC.staleness_of(load))
    except:
        break

for item in wait.until(EC.presence_of_all_elements_located((By.CSS_SELECTOR, "[id^=item_]"))):
    name = item.find_element_by_css_selector(".pro-name.el2").text
    print(name)
driver.quit()