Python Epson Printer on Windows

printer.py

import os, sys
import win32print

import StringIO

printer_name = win32print.GetDefaultPrinter()
hPrinter = win32print.OpenPrinter(printer_name)

def prn_txt(text):
    if sys.version_info >= (3,):
      raw_data = bytes (text, "utf-8")
    else:
      raw_data = text

    output = StringIO.StringIO()
    output.write(b'\x1b\x742') # charset
    output.write(raw_data.decode('utf-8').encode('cp850'))
    output.write(b'\x1dV\x01') # cut

    try:
      hJob = win32print.StartDocPrinter (hPrinter, 1, ("test of raw data", None, "TEXT"))
      try:
        win32print.StartPagePrinter (hPrinter)
        win32print.WritePrinter (hPrinter, output)
        win32print.EndPagePrinter (hPrinter)
      finally:
        win32print.EndDocPrinter (hPrinter)
    finally:
      win32print.ClosePrinter (hPrinter)

txt = "blabla\ntesting\ntest\n"
print prn_txt(txt)