Implemented JSON extraction techniques in web scraping

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📅 2023-10-22 — Session: Implemented JSON extraction techniques in web scraping

🕒 01:00–01:25
🏷️ Labels: JSON, Web Scraping, Python, Javascript, Beautifulsoup
📂 Project: Dev
⭐ Priority: MEDIUM

Session Goal: The session aimed to explore and implement various methods for extracting JSON data embedded within HTML and JavaScript content using Python and JavaScript.

Key Activities:

  1. HTML and JSON Extraction: Utilized Python with BeautifulSoup to extract JSON data from <script> tags in HTML content. Regular expressions were employed to handle cases where JSON data was not in expected tags.
  2. JavaScript JSON Handling: Addressed JSON extraction from JavaScript variables like window.__PRELOADED_STATE__, including error handling for truncated JSON.
  3. Error Correction: Corrected library import oversights and variable loss issues in JavaScript to ensure successful JSON extraction.
  4. Product Metadata Extraction: Developed methods to extract product metadata such as title, description, image URL, and product URL from HTML.
  5. Python Script Development: Created a Python script leveraging BeautifulSoup for automated web scraping of product details.

Achievements:

  • Successfully implemented techniques for JSON data extraction from both HTML and JavaScript.
  • Resolved errors related to library imports and variable handling.
  • Developed a reusable Python script for web scraping tasks.

Pending Tasks:

  • Further refine error handling mechanisms for truncated JSON data.
  • Optimize regular expression patterns for more robust JSON extraction.

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