我设法得到了评论，但只有第一页：
import pandas as pd
from urllib.request import Request, urlopen as uReq #package web scraping
from bs4 import BeautifulSoup as soup
def make_soup(website) :
req = Request(website,headers = {'User-Agent' : 'Mozilla/5.0'})
uClient = uReq(req)
page_html = uClient.read()
uClient.close()
page_soup = soup(page_html, 'html.parser')
return page_soup
lazada_url = 'https://www.lazada.com.my/products/xiaomi-mi-a1-4gb-ram-32gb-rom-i253761547-s336359472.html?spm=a2o4k.searchlistcategory.list.64.71546883QBZiNT&search=1'
website = make_soup(lazada_url)
news_headlines = pd.DataFrame( columns = ['reviews','sentiment','score'])
headlines = website.findAll('div',attrs={"class":"item-content"})
n = 0
for item in headlines :
top = item.div
#print(top)
#print()
text_headlines = top.text
print(text_headlines)
print()
n +=1
news_headlines.loc[n-1,'title'] = text_headlines
结果仅显示第一页。我怎样才能对所有页面执行此操作？ URL 中没有可供我循环浏览的页面。
这是我需要获取所有结果页面的示例输出：
I like this phone very much and it's global version. I recommend this phone for who like gaming. Delivery just took 3 days only. Thanks Lazada
Item was received in just two days and was wonderfully wrapped. Thanks for the excellent services Lazada!
Very happy with the phone. It's original, it arrived in good condition. Built quality is superb for a budget phone.
The delivery is very fast just take one day to reach at my home. However, the tax invoice is not attached. How do I get the tax invoice?
great deal from lazada. anyway, i do not find any tax invoice. please do email me the tax invoice. thank you.
您可以抓取评论底部的分页来查找评论的最小和最大数量：
import requests
from bs4 import BeautifulSoup as soup
def get_page_reviews(content:soup) -> dict:
rs = content.find('div', {'class':'mod-reviews'}).find_all('div', {'class':'item'})
reviews = [i.find('div', {'class':'item-content'}).find('div', {'class':'content'}).text for i in rs]
stars = [len(c.find('div', {'class':'top'}).find_all('img')) for c in rs]
_by = [i.find('div', {'class':'middle'}).find('span').text for i in rs]
return {'stars':stars, 'reviews':reviews, 'authors':_by}
d = soup(requests.get('https://www.lazada.com.my/products/xiaomi-mi-a1-4gb-ram-32gb-rom-i253761547-s336359472.html?spm=a2o4k.searchlistcategory.list.64.71546883QBZiNT&search=1').text, 'html.parser')
results = list(map(int, filter(None, [i.text for i in d.find_all('button', {'class':'next-pagination-item'})])))
for i in range(min(results), max(results)+1):
new_url = f'https://www.lazada.com.my/products/xiaomi-mi-a1-4gb-ram-32gb-rom-i253761547-s336359472.html?spm=a2o4k.searchlistcategory.list.64.71546883QBZiNT&search={i}'
#now, can use new_url to request the next page of reviews
r = get_page_reviews(soup(requests.get(new_url).text, 'html.parser'))
final_result = [{'stars':a, 'author':b, 'review':c} for a, b, c in zip(r['stars'], r['authors'], r['reviews'])]
输出（第一页）：
[{'stars': 5, 'author': 'by Ridwan R.', 'review': "I like this phone very much and it's global version. I recommend this phone for who like gaming. Delivery just took 3 days only. Thanks Lazada"}, {'stars': 5, 'author': 'by Razli A.', 'review': 'Item was received in just two days and was wonderfully wrapped. Thanks for the excellent services Lazada!'}, {'stars': 5, 'author': 'by Nur F.', 'review': "Very happy with the phone. It's original, it arrived in good condition. Built quality is superb for a budget phone."}, {'stars': 5, 'author': 'by Muhammad S.', 'review': 'The delivery is very fast just take one day to reach at my home. However, the tax invoice is not attached. How do I get the tax invoice?'}, {'stars': 5, 'author': 'by Xavier Y.', 'review': 'great deal from lazada. anyway, i do not find any tax invoice. please do email me the tax invoice. thank you.'}]
你需要做的就是在
click()SeleniumSelenium在给定的 URL 中，有用于审阅的页面按钮，因此只需使用
xpathclassidfind_element_by_(anything you want).click()这是我的示例代码：
from selenium import webdriver
from bs4 import BeautifulSoup as soup
import time
from selenium.webdriver.chrome.options import Options
url = 'https://www.lazada.com.my/products/xiaomi-mi-a1-4gb-ram-32gb- rom-i253761547-s336359472.html? spm=a2o4k.searchlistcategory.list.64.71546883QBZiNT&search=1'
chrome_options = Options()
#chrome_options.add_argument("--headless")
browser = webdriver.Chrome('/Users/baejihwan/Documents/chromedriver',
chrome_options=chrome_options)
browser.get(url)
time.sleep(0.1)
page_soup = soup(browser.page_source, 'html.parser')
headlines = page_soup.findAll('div',attrs={"class":"item-content"})
for item in headlines :
top = item.div
text_headlines = top.text
print(text_headlines)
browser.find_element_by_xpath('//* .[@id="module_product_review"]/div/div[3]/div[2]/div/div/button[2]').click()
page_soups = soup(browser.page_source, 'html.parser')
headline = page_soups.findAll('div',attrs={"class":"item-content"})
for item in headline:
top = item.div
text_headlines = top.text
print(text_headlines)
输出：
I like this phone very much and it's global version. I recommend this phone for who like gaming. Delivery just took 3 days only. Thanks Lazada
Item was received in just two days and was wonderfully wrapped. Thanks for the excellent services Lazada!
Very happy with the phone. It's original, it arrived in good condition. Built quality is superb for a budget phone.
The delivery is very fast just take one day to reach at my home. However, the tax invoice is not attached. How do I get the tax invoice?
great deal from lazada. anyway, i do not find any tax invoice. please do email me the tax invoice. thank you.
Penghantaran cepat. Order ahad malam, sampai rabu pagi. Tu pun sbb selasa cuti umum.
Fon disealed dgn bubble wrap dan box.
Dah check mmg original malaysia.
Dpt free tempered glass. Ok je.
Fon so far pakai ok.
Selama ni pakai iphone, bila pakai android ni kekok sikit.
invoice tidak disertakan.
battery dia dikira cpt juga hbs..
Saya telah beli smartphone xioami mi a1 dan telah terima hari ni. Tetapi telefon itu telah rosak. Tidak dapat on.
beli pada 1/6 dgn harga rm599 dpt free gift usb otg type c 64gb jenama sandisk.
delivery pantas, order 1/6 sampai 4/6 tu pon sebab weekend ja kalau x mesti order harini esk sampai dah.
packaging terbaik, dalam kotak ada air bag so memang secure.
kotak fon sealed, dlm kotak dapat screen protector biasa free, kabel type c dgn charger 3 pin.
keluar kotak terus update ke Android oreo, memang puas hati la overall. memang berbaloi sangat beli. Kudos to lazada.
i submitted the order on on sunday and i get it tuesday morning, even the despatch guy called me at 830am just to make sure if im already at the office. super reliable. for the phone, well i got it for RM599. what could you possibly asked for more? hehehe
Purchased Xiaomi Mi A1 from Official store with an offer of "Free gift SanDisk Ultra 64GB Dual USB Drive 3.0 OTG Type C Flash Drive". But they delivered only USB drive 2.0
最好定义一个函数来读取 HTML 代码并解析你想要的数据。此代码仅解析到第2页的评论，您可以修改它以将所有评论都解析到最后。