def create_linear_stock(value=None):
    if not value:
        value = random.randint(1, 100)

    stock = dict(locals())
    stock['symbol'] = uuid4()

    stock['slope'] = random.uniform(-1, 1)


#    def tick(self): #  I was trying this
    def tick():
        stock['value'] += stock['slope']

    stock['tick'] = tick

    return stock