Demonstration of receiving data from arduino via python

arduino_counter.ino

int count=0;

void setup()
{
  Serial.begin(9600);
}

void loop()
{
  while(1)
  {
    if(count<20)
    {
      Serial.println(count);
      delay(1000);
      count=count+1;
    }
  }
}

python_serial_reader.py

import serial        #Serial imported for Serial communication
import time             #Required to use delay functions
 
ArduinoSerial = serial.Serial('com3',9600) #Create Serial port object called arduinoSerialData
time.sleep(2)                               #wait for 2 secounds for the communication to get established

while(1):
    print (ArduinoSerial.readline())#read the serial data and print it as line