Focuses on what an object does rather than what it is . Decoupling: Allows for easier mocking and testing. 2. Dependency Injection
pdfplumber builds on pdfminer.six but adds intelligent layout analysis. Its secret weapon: and page objects as context managers .
Abandon setup.py , requirements.txt , and Pipfile . Python 3.12 standardizes everything in pyproject.toml : Focuses on what an object does rather than what it is
import asyncio async def fetch_api_data(endpoint: str) -> dict: # Simulated network I/O await asyncio.sleep(1) return "endpoint": endpoint, "status": "success" async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(fetch_api_data("/users")) task2 = tg.create_task(fetch_api_data("/orders")) print(task1.result(), task2.result()) asyncio.run(main()) Use code with caution. 4. Memory Optimization via Generators and Iterators
@app.route("/api/data", methods=["GET"]) def get_data(): data = "message": "Hello, World!" return jsonify(data) Dependency Injection pdfplumber builds on pdfminer
if sys.version_info >= (3, 12): from newfangled import turbo_encoder else: from legacy import turbo_encoder # fallback
F-strings in modern Python can handle quotes, newlines, and deep expressions natively inside the curly braces without throwing syntax errors. Python 3
Replaces fragile requirements.txt setups with cryptographic lockfiles and predictable virtual environments. Ruff
import asyncio async def fetch_data(id): await asyncio.sleep(1) # Simulate I/O return "id": id, "data": "value" async def main(): tasks = [fetch_data(i) for i in range(10)] results = await asyncio.gather(*tasks) print(results) Use code with caution. B. Decorators for Cross-Cutting Concerns
Want to dive deeper? Check out “Python 3.12’s What’s New” and the ruff linter documentation. The PDF of this article is available for download—ironically generated using the very patterns described above.
For everyday tasks like merging, splitting, cropping, and encrypting PDFs, the pure-Python (the active successor to PyPDF2) is your reliable workhorse. It is lightweight, has no dependencies, and is perfect for simple, low-level page operations. Its API is mature, well-documented, and excellent for beginners.