def __init__(self, devfile="<STR_LIT>", auto_flush=True, *args, **kwargs):
Escpos.__init__(self, *args, **kwargs)<EOL>self.devfile = devfile<EOL>self.auto_flush = auto_flush<EOL>self.open()<EOL>
:param devfile: Device file under dev filesystem
:param auto_flush: automatically call flush after every call of _raw()