使用Python抓取Google Play应用程序

本文主要是介绍使用Python抓取Google Play应用程序，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

完整代码

如果不需要说明，请查看联机 IDE 中的完整代码示例。

import time, json
from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from webdriver_manager.chrome import ChromeDriverManager
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from parsel import Selector

google_play_apps = {
    'Top charts': {
        'Top free': [],
        'Top grossing': [],
        'Top paid': []
    },
}


def scroll_page(url):
    service = Service(ChromeDriverManager().install())

    options = webdriver.ChromeOptions()
    options.add_argument("--headless")
    options.add_argument("--lang=en")
    options.add_argument("user-agent=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36")
    options.add_argument("--no-sandbox")

    driver = webdriver.Chrome(service=service, options=options)
    driver.get(url)

    while True:
        try:
            driver.execute_script("document.querySelector('.snByac').click();")
            WebDriverWait(driver, 10000).until(EC.visibility_of_element_located((By.TAG_NAME, 'body')))
            break
        except:
            driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
            WebDriverWait(driver, 10000).until(EC.visibility_of_element_located((By.TAG_NAME, 'body')))

    scrape_top_charts(driver=driver, chart='Top free', button_selector='#ct\|apps_topselling_free .ypTNYd')
    scrape_top_charts(driver=driver, chart='Top grossing', button_selector='#ct\|apps_topgrossing .ypTNYd')
    scrape_top_charts(driver=driver, chart='Top paid', button_selector='#ct\|apps_topselling_paid .ypTNYd')

    selector = Selector(driver.page_source)
    driver.quit()

    return selector


def scrape_top_charts(driver, chart, button_selector):
    button = driver.find_element(By.CSS_SELECTOR, button_selector)
    driver.execute_script("arguments[0].click();", button)
    time.sleep(2)
    selector = Selector(driver.page_source)

    for result in selector.css('.itIJzb'):
        title = result.css('.OnEJge::text').get()
        link = 'https://play.google.com' + result.css('::attr(href)').get()
        category = result.css('.ubGTjb .sT93pb.w2kbF:not(.K4Wkre)::text').get()
        rating = float(result.css('.CKzsaf .w2kbF::text').get())
        thumbnail = result.css('.stzEZd::attr(srcset)').get().replace(' 2x', '')

        google_play_apps['Top charts'][chart].append({
            'title': title,
            'link': link,
            'category': category,
            'rating': rating,
            'thumbnail': thumbnail,
        })


def scrape_all_sections(selector):  
    for section in selector.css('section'):
        section_title = section.css('.kcen6d span::text').get()
        google_play_apps[section_title] = []

        for app in section.css('.UVEnyf'):
            title = app.css('.Epkrse::text').get()
            link = 'https://play.google.com' + app.css('.Si6A0c::attr(href)').get()
            rating = app.css('.LrNMN::text').get()
            rating = float(rating) if rating else rating
            thumbnail = app.css('.Q8CSx::attr(srcset)').get().replace(' 2x', '')

            google_play_apps[section_title].append({
                'title': title,
                'link': link,
                'rating': rating,
                'thumbnail': thumbnail,
            })

    print(json.dumps(google_play_apps, indent=2, ensure_ascii=False))


def scrape_google_play_apps():
    params = {
        'device': 'phone',  
        'hl': 'en_GB',      # language 
        'gl': 'US',         # country of the search
    }

    URL = f"https://play.google.com/store/apps?device={params['device']}&hl={params['hl']}&gl={params['gl']}"

    result = scroll_page(URL)
    scrape_all_sections(result)


if __name__ == "__main__":
    scrape_google_play_apps()

制备

安装库：

pip install parsel selenium webdriver webdriver_manager

减少被阻止的机会

确保您使用请求标头用户代理充当“真实”用户访问。因为默认是python请求，并且网站知道它很可能是发送请求的脚本。检查您的用户代理是什么。requestsuser-agent

有一个方法可以减少在网络抓取博客文章时被阻止的机会，可以让您熟悉基本和更高级的方法。

代码说明

导入库：

import time, json
from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from webdriver_manager.chrome import ChromeDriverManager
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from parsel import Selector

定义字典结构：

google_play_apps = {
    'Top charts': {
        'Top free': [],
        'Top grossing': [],
        'Top paid': []
    },
}

顶级代码环境

在函数的开头，定义了用于生成 .如果要将其他参数传递给 URL，可以使用字典执行此操作。参数会影响输出结果：URLparams

params = {
    'device': 'phone',  
    'hl': 'en_GB',      # language 
    'gl': 'US',         # country of the search
}

接下来，将 URL 传递给函数以滚动页面并获取所有数据。此函数返回的结果将传递给函数以提取必要的数据。这些功能的说明将在下面的相应标题中。scroll_page(URL)scrape_all_categories(result)

此代码使用普遍接受的规则，即使用 __name__ == “__main__” 构造：

def scrape_google_play_apps():
    params = {
        'device': 'phone',  
        'hl': 'en_GB',      # language 
        'gl': 'US',         # country of the search
    }

    URL = f"https://play.google.com/store/apps?device={params['device']}&hl={params['hl']}&gl={params['gl']}"

    result = scroll_page(URL)
    scrape_all_sections(result)


if __name__ == "__main__":
    scrape_google_play_apps()

仅当用户运行此文件时，才会执行此检查。如果用户将此文件导入另一个文件，则检查将不起作用。

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