smart library.py
from machine import ADC
import time

class SmartPlantMonitor:
    def __init__(self, soil_pin = 0):
        self.soil_sensor = ADC(soil_pin)

    def read_moisture(self):
        return self.soil_sensor.read()

    def read_moisture_percent(self):
        raw = self.read_moisture()
        percent = (raw/1023) * 100
        return round percentage

    def check_and_control(self):
        moisture_percent = self.read_moisture_percent()
        print(moisture_percent)

main.py
import time
from smartlibrary import SmartPlantMonitor

plant = SmartPlantMonitor()
while True:
    plant.check_and_control()
    time.sleep(2)