read_temperature_humidity.py

import os
from time import sleep
from dotenv import load_dotenv
from Adafruit_IO import Client, Data
from smbus2 import SMBus, i2c_msg

def get_measurement():
    write_msg = i2c_msg.write(0x38, [0xac, 0x33, 0x00])
    read_msg = i2c_msg.read(0x38, 7)

    with SMBus(1) as bus:
        bus.i2c_rdwr(write_msg, read_msg)

    data = bytes(read_msg)

    raw_humidity = (
        (data[1] << 12) |
        (data[2] << 4) |
        ((data[3] & 0xF0) >> 4)
    )
    humidity = (raw_humidity / (1 << 20)) * 100

    raw_temp = (
        ((data[3] & 0x0F) << 16) |  # lower 4 bits of byte 3
        (data[4] << 8) |
        data[5]
    )
    temperature = (raw_temp / (1 << 20)) * 200 - 50
    return humidity, temperature


if __name__ == "__main__":
    load_dotenv()

    humidity_sum, temperature_sum = 0, 0
    for _ in range(10):
        humidity, temperature = get_measurement()
        humidity_sum += humidity
        temperature_sum += temperature
        sleep(0.1)
    humidity, temperature = humidity_sum / 10, temperature_sum / 10

    username = os.getenv("ADAFRUIT_IO_USERNAME")
    key = os.getenv("ADAFRUIT_IO_KEY")
    aio = Client(username, key)
    aio.create_data('humidity', Data(value=humidity))
    aio.create_data('temperature', Data(value=temperature))