: Serve PDF reports without blocking the event loop (FastAPI, Quart).
from pypdf import PdfReader reader = PdfReader("doc.pdf") meta = reader.metadata # The hidden gold: print(f"Producer: meta.get('/Producer')") # 'Adobe Acrobat' vs 'Chrome PDF' print(f"Page layout: reader.page_layout") # SinglePage, TwoColumnLeft
Combining everything above:
– Use pikepdf + xmltodict :
reader = PdfReader("input.pdf") writer = PdfWriter() for page in reader.pages: # Add a sticky note annotation WITHOUT rewriting the content stream annotation = AnnotationBuilder.freetext( "DRAFT", rect=(50, 550, 200, 570), font="Arial", font_size="12pt" ) page.annotations.append(annotation) writer.add_page(page)
If you would like to dive deeper into any of these areas, please let me know. I can provide:
Standard library memoization tool to instantly cache pure function results. : Serve PDF reports without blocking the event
"Mix and match. Combine libraries like a DJ blends beats—pikePDF for cleanup, pdfplumber for data, pypdfium2 for images."
Decorators should leverage functional.wraps to preserve the original function's metadata and type hints. 7. Memory and Performance Optimization via Generators
JIT compiling Python functions into optimized machine code. "Mix and match
import pdfplumber with pdfplumber.open("report.pdf") as pdf: for page in pdf.pages: # Extract tables by detecting horizontal/vertical lines table = page.find_tables( table_settings= "vertical_strategy": "lines", "horizontal_strategy": "lines"
with open("merged.pdf", "wb") as f: writer.write(f)