from flask import send_file
from flask import Flask
from random import randint
app = Flask(__name__)
@app.route('/')
def cook():
    filename = 'flask.png'
    resp = send_file(filename, mimetype='image/png')
    resp.set_cookie('username', str(randint(5,100)))
    return resp
if __name__ == '__main__':
    app.run(debug=True)