arduino comunication orange py

Development Tools IDE 1.x
1

I am trying to communicate between my Arduino and Orange Pi PC, I am using the serial port through the usb, I am using Python to communicate with Arduino, but I can not make the arduino communicate with Orange PI, I can send load files in Arduino but when I call the python script the arduino does not, my .S.O is Arrmbian

import serial
import time
ser=serial.Serial("/dev/ttyUSB",9600)
i=0
while i=<1000 
ser write(str(chr(116)))
#t=raw_imput("tetse")
#print type("teste")
#ser.println(str(chr(116)))
#time.sleep(1000)
print ser.readline()

I am using this script to do communication