The "Development Strategies" part of the title refers to the ecosystem surrounding the code:

The book is praised for its "95/5" philosophy: focusing on the 5% of Python knowledge that yields 95% of the impact in real-world engineering. Amazon.com Key Highlights and Reviews Core Philosophy : Unlike comprehensive manuals like Learning Python

def extract_pdf_data(pdf_path: Path) -> PDFData: with pdfplumber.open(pdf_path) as pdf: full_text = "\n".join(p.extract_text() or "" for p in pdf.pages) all_tables = [t for p in pdf.pages for t in p.extract_tables()] reader = PdfReader(pdf_path) return PDFData( path=pdf_path, pages=len(reader.pages), text_length=len(full_text), tables=all_tables, )