- Programming 經驗,最好是在 Python 方面。如果參與者具備 Python 以外的程式語言經驗,培訓可以擴展以包含更多 Python 的入門練習。
觀眾
- 開發人員
Web Scraping是一種從網站提取數據然後將其保存到本地文件或數據庫的技術。
這種由講師指導的現場培訓(現場或遠程)面向希望使用Python自動化爬行許多網站以提取數據以進行處理和分析的開發人員。
在培訓結束時,參與者將能夠:
- 安裝和配置Python及所有相關套件。
- 檢索和解析存儲在多個網站中的數據。
- 了解網站的運作方式及其HTML的結構。
- 構建爬蟲以大規模爬取網頁。
- 使用Selenium爬取AJAX驅動的網頁。
課程格式
- 互動式講座和討論。
- 大量練習和實作。
- 在實時實驗環境中進行動手實作。
課程自定義選項
- 本課程假設學員具備編程知識。
- 如需為本課程定制培訓,請聯繫我們進行安排。
介紹
設置開發環境
Python 入門:數據結構、條件、文件處理等。
Python 網頁抓取套件:Scrapy 和 BeautifulSoup
網站如何運作
HTML 是如何構建的
發出 Web 請求
抓取 HTML 頁
使用 XPath 和 CSS
使用常規 Express離子過濾數據
創建網路爬蟲
使用 Selenium 抓取 AJAX 和 JavaScript 頁面。
網頁抓取最佳實踐
故障排除
總結和結論
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