from flask import Flask, g, request

app = Flask(__name__)


@app.before_request
def before_request():
    print("before request started")
    print(request.url)


@app.before_request
def before_request2():
    print("before request started 2")
    print(request.url)
    g.name = "SampleApp"


@app.after_request
def after_request(response):
    print("after request finished")
    print(request.url)
    response.headers['key'] = 'value'
    return response


@app.teardown_request
def teardown_request(exception):
    print("teardown request")
    print(request.url)


@app.route('/')
def index():
    return 'Hello, %s!' % g.name


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