import random
from time import sleep

def data_test(turns):
    counter = 0
    for i in range(turns):
        JSONstr = f'{{ "T" : {counter} , "V" : {random.randint(0, 255)} + }}'
        yield JSONstr
        counter += 1
        sleep(0.1)

def data_test_forever():
    counter = 0
    while True:
        JSONstr = f'{{ "T" : {counter} , "V" : {random.randint(0, 255)} }}'
        yield JSONstr
        counter += 1
        sleep(0.1)