如何废弃审查数据在阅读更多Flipkart评论中

Question

我正在尝试使用请求和beautifulsoup包来抓取Flipkart提取产品的评论。我们可以取出存在于这些评论中的更多点击事件中的数据。

Answer 1

from selenium import webdriver
from selenium.webdriver.common.by import By
from contextlib import closing
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver import Firefox
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.keys import Keys
import time
import urllib2
import re
from bs4 import BeautifulSoup
import unicodedata

def remove_non_ascii_1(text):

    return ''.join([i if ord(i) < 128 else ' ' for i in text])

with closing(Firefox()) as browser:
    site = "https://www.flipkart.com/asus-zenfone-2-laser-ze550kl-black-16-gb/product-reviews/itme9j58yzyzqzgc?pid=MOBE9J587QGMXBB7"
    browser.get(site)

    file = open("review.txt", "w")

    for count in range(1, 10):
        nav_btns = browser.find_elements_by_class_name('_33m_Yg')

        button = ""

        for btn in nav_btns:
            number = int(btn.text)
            if(number==count):
                button = btn
                break

        button.send_keys(Keys.RETURN)
        WebDriverWait(browser, timeout=10).until(EC.presence_of_all_elements_located((By.CLASS_NAME, "_2xg6Ul")))

        read_more_btns = browser.find_elements_by_class_name('_1EPkIx')


        for rm in read_more_btns:
            browser.execute_script("return arguments[0].scrollIntoView();", rm)
            browser.execute_script("window.scrollBy(0, -150);")
            rm.click()

        page_source = browser.page_source

        soup = BeautifulSoup(page_source, "lxml")
        ans = soup.find_all("div", class_="_3DCdKt")


        for tag in ans:
            title = unicode(tag.find("p", class_="_2xg6Ul").string).replace(u"\u2018", "'").replace(u"\u2019", "'")
            title = remove_non_ascii_1(title)
            title.encode('ascii','ignore')
            content = tag.find("div", class_="qwjRop").div.prettify().replace(u"\u2018", "'").replace(u"\u2019", "'")
            content = remove_non_ascii_1(content)
            content.encode('ascii','ignore')
            content = content[15:-7]

            votes = tag.find_all("span", class_="_1_BQL8")
            upvotes = int(votes[0].string)
            downvotes = int(votes[1].string)

            file.write("Review Title : %s\n\n" % title )
            file.write("Upvotes : " + str(upvotes) + "\n\nDownvotes : " + str(downvotes) + "\n\n")
            file.write("Review Content :\n%s\n\n\n\n" % content )

    file.close()

用法：

1. 通过运行pip install bs4 selenium安装需求。
2. 将geckodriver添加到PATH。请关注这些instructions。
3. 将产品的链接放在脚本中的站点变量中。
4. 通过运行python scrape.py运行该脚本。
5. 评论将保存在文件review.txt中。