# نوشتن در فایل
with open("log.txt", "a") as f:
    f.write("رویداد جدید ثبت شد\n")

# خواندن کل فایل
with open("log.txt", "r") as f:
    print(f.read())

import ujson

config = {
    "wifi_ssid": "MyHomeWiFi",
    "temp_threshold": 30,
    "device_name": "esp32-academy-01"
}

# ذخیره
with open("config.json", "w") as f:
    ujson.dump(config, f)

# بازخوانی بعد از ریست شدن برد
with open("config.json", "r") as f:
    loaded = ujson.load(f)
    print("نام دستگاه:", loaded["device_name"])