session.py

from flask import Flask, session

app = Flask(__name__)
app.secret_key = 'A0Zr98j/3yX R`XHH!jmN]LWX/,?RT'

@app.route('/')
def index():
    return "Root  route  for  the  sessions  example"

@app.route('/session/write/<name>/')
def write(name=None):
    session['name'] = name
    return "Wrote %s into 'name' key of session" % name

@app.route('/session/read/')
def read():
    try:
        if(session['name']):
            return str(session['name'])
    except KeyError:
        pass
    return "No session veriable set for 'name' key"

@app.route('/session/remove/')
def remove():
    session.pop('name', None)
    return "Removed key 'name' from session"

if __name__ == "__main__":
    app.run(host='0.0.0.0', debug=True)