Q1. What is Flask?
Flask is a lightweight WSGI web application framework in Python. It is designed to be simple and extensible, with a small core but many extensions for added functionality. It's popular for building REST APIs and web applications.
Q2. How do you create a minimal Flask app?
Example:
from flask import Flask
app = Flask(__name__)
@app.route(''/'')
def hello():
return ''Hello, World!''
if __name__ == ''__main__'':
app.run()Q3. What are routes and how do you handle URL parameters?
Routes are defined using @app.route(). You can capture URL parameters with . Example: .
@app.route(''/user/'')
def user(name):
return f''Hello {name}'' Q4. How do you handle POST requests and form data?
Use request object from flask. Example:
from flask import request
@app.route(''/submit'', methods=[''POST''])
def submit():
name = request.form[''name'']
return f''Received {name}''Q5. What is template rendering in Flask?
Flask uses Jinja2 templating. Create HTML files in a templates folder, then use render_template(). Example:
from flask import render_template
@app.route(''/profile/'')
def profile(name):
return render_template(''profile.html'', name=name)