Flask web applications

Hari Nair

We can build complex web applications using Python. For that, we would need one of the third party Python web framework Flask.

e:\python>pip install flask

# flask
#web2.py
from flask import Flask
app=Flask(__name__)

@app.route("/")
def hello():
    return "Hello Chennai"


e:\python>set FLASK_APP=web2.py

to run the app server
e:\python>flask run

open browser and goto
http://127.0.0.1:5000/


Another example

#web4.py

from flask import Flask , render_template
app= Flask(__name__)

@app.route("/")
@app.route("/home")
def home():
    return render_template('home.html')

@app.route("/about")
def about():
    return render_template('about.html')

@app.route("/home2")
def home2():
    return render_template('home2.html')

@app.route("/isdeep")
def isdeep():
    return render_template('isdeep.html')

if __name__ == '__main__':
    app.debug=True
    app.run