simple counter in flask

gistfile1.txt

# this won't work, either: 

# in flask_app:

from counter import counter_update, counter_display


@app.route('/counter/')
def counter():

    counter = counter_display()

    return render_template('counter.html', counter = counter)

@app.route('/counter/update/API_key=<api_key>/mac=<mac>/data=<data>', methods=['GET'])
def update_counter(api_key, mac, data):
    if (api_key == API_KEY and mac == MAC_ADDRESS):

        counter_update(data)

        return 'update completed'

    else:
        return render_template('403.html')


# counter.py


counter = 0

def counter_update(new_counter):

    counter = new_counter

    return counter

def counter_display():

    return counter