What is Flask? Nedir?
Flask is a minimalist and flexible micro web framework for Python.
Flask was developed by Armin Ronacher in 2010 as a Python micro web framework. 'Micro' doesn't mean Flask's capabilities are limited; it means the core is kept small and extensible. It's built on the Werkzeug WSGI toolkit and Jinja2 template engine. Flask adopts a 'batteries not included' approach, unlike Django. Components like database, form validation, and authentication are integrated through extensions as needed. This flexibility gives developers full control over architectural decisions. A rich extension ecosystem exists: Flask-SQLAlchemy (ORM), Flask-Login (authentication), Flask-WTF (forms), Flask-RESTful (API), and Flask-Migrate (database migrations). It can scale from small APIs to large applications. Netflix, Reddit, Lyft, and Zillow use Flask. It's frequently preferred for serving machine learning models as APIs, prototyping, and developing microservices.
Use Cases
REST API development, ML model serving, Prototyping and MVP, Microservices, Lightweight web applications
Pros
Minimalist and easy to learn, Full flexibility and control, Rich extension ecosystem, Rapid prototyping, Lightweight and fast
Cons
Must build your own structure for large projects, No built-in admin panel like Django, Limited async support (Quart as alternative), No standard project structure
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