📚 AI reads books: Page-by-Page PDF Knowledge Extractor & Summarizer

The read_books.py script performs an intelligent page-by-page analysis of PDF books, methodically extracting knowledge points and generating progressive summaries at specified intervals. It processes each page individually, allowing for detailed content understanding while maintaining the contextual flow of the book. Below is a detailed explanation of how the script works:

Features

• 📚 Automated PDF book analysis and knowledge extraction
• 🤖 AI-powered content understanding and summarization
• 📊 Interval-based progress summaries
• 💾 Persistent knowledge base storage
• 📝 Markdown-formatted summaries
• 🎨 Color-coded terminal output for better visibility
• 🔄 Resume capability with existing knowledge base
• ⚙️ Configurable analysis intervals and test modes
• 🚫 Smart content filtering (skips TOC, index pages, etc.)
• 📂 Organized directory structure for outputs

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How to Use

1. Setup

   # Clone the repository
   git clone [repository-url]
   cd [repository-name]
   
   # Install requirements
   pip install -r requirements.txt
   

2. Configure

   • Place your PDF file in the project root directory
   • Open read_books.py and update the PDF_NAME constant with your PDF filename
   • (Optional) Adjust other constants like ANALYSIS_INTERVAL or TEST_PAGES

3. Run

   python read_books.py
   

4. Output The script will generate:

   • book_analysis/knowledge_bases/: JSON files containing extracted knowledge
   • book_analysis/summaries/: Markdown files with interval and final summaries
   • book_analysis/pdfs/: Copy of your PDF file

5. Customization Options

   • Set ANALYSIS_INTERVAL = None to skip interval summaries
   • Set TEST_PAGES = None to process entire book
   • Adjust MODEL and ANALYSIS_MODEL for different AI models

Configuration Constants

• PDF_NAME: The name of the PDF file to be analyzed.
• BASE_DIR: The base directory for the analysis.
• PDF_DIR: Directory where the PDF file is stored.
• KNOWLEDGE_DIR: Directory where the knowledge base will be saved.
• SUMMARIES_DIR: Directory where the summaries will be saved.
• PDF_PATH: Full path to the PDF file.
• OUTPUT_PATH: Path to the knowledge base JSON file.
• ANALYSIS_INTERVAL: Number of pages after which an interval analysis is generated. Set to None to skip interval analyses.
• MODEL: The model used for processing pages.
• ANALYSIS_MODEL: The model used for generating analyses.
• TEST_PAGES: Number of pages to process for testing. Set to None to process the entire book.

Classes and Functions

PageContent Class

A Pydantic model that represents the structure of the response from the OpenAI API for page content analysis. It has two fields:

• has_content: A boolean indicating if the page has relevant content.
• knowledge: A list of knowledge points extracted from the page.

load_or_create_knowledge_base() -> Dict[str, Any]

Loads the existing knowledge base from the JSON file if it exists. If not, it returns an empty dictionary.

save_knowledge_base(knowledge_base: list[str])

Saves the knowledge base to a JSON file. It prints a message indicating the number of items saved.

process_page(client: OpenAI, page_text: str, current_knowledge: list[str], page_num: int) -> list[str]

Processes a single page of the PDF. It sends the page text to the OpenAI API for analysis and updates the knowledge base with the extracted knowledge points. It also saves the updated knowledge base to a JSON file.

load_existing_knowledge() -> list[str]

Loads the existing knowledge base from the JSON file if it exists. If not, it returns an empty list.

analyze_knowledge_base(client: OpenAI, knowledge_base: list[str]) -> str

Generates a comprehensive summary of the entire knowledge base using the OpenAI API. It returns the summary in markdown format.

setup_directories()

Sets up the necessary directories for the analysis. It clears any previously generated files and ensures the PDF file is in the correct location.

save_summary(summary: str, is_final: bool = False)

Saves the generated summary to a markdown file. It creates a file with a proper naming convention based on whether it is a final or interval summary.

print_instructions()

Prints instructions for using the script. It explains the configuration options and how to run the script.

main()

The main function that orchestrates the entire process. It sets up directories, loads the knowledge base, processes each page of the PDF, generates interval and final summaries, and saves them.

How It Works

1. Setup: The script sets up the necessary directories and ensures the PDF file is in the correct location.
2. Load Knowledge Base: It loads the existing knowledge base if it exists.
3. Process Pages: It processes each page of the PDF, extracting knowledge points and updating the knowledge base.
4. Generate Summaries: It generates interval summaries based on the ANALYSIS_INTERVAL and a final summary after processing all pages.
5. Save Results: It saves the knowledge base and summaries to their respective files.

Running the Script

1. Place your PDF in the same directory as the script.
2. Update the PDF_NAME constant with your PDF filename.
3. Run the script. It will process the book, extract knowledge points, and generate summaries.

Example Usage