setup a printer in your system.
      It is very important not to use any filter in spooler !!   
      select "Raw Print Queue" or "Text Only Printer" in printer model.

select "setup" Menu 
  select your printer model,duplex,optional device.

lpy
lpy filename
lpy --help

BSD OS(Linux,FreeBSD)
      lpy -P myprinter filename
      lpy -P myprinter -#3 filename

SystemV OS(Solaris,HP¡¼UX)
      lpy -d myprinter filename

lpr lp 
     lpy -d myprinter -#3 filename (ERROR)

Log-directory is $HOME/.lpy

If you find a "Not_found" file in $HOME/.lpy directory,
then you must read a "Not_found" file.
There is a required program name which could not be found in your path.

edit Lpy/def_parm.py to change Log-file sizes.
   maxBytes = 600*1024 # Max bytes
   logCount = 6        # log rotate    

edit  Lpy/def_parm.py to save parameters into a marshal file 
which can not be read by a man.

    (default)save parameters into a xml file.
     Parm_type = F_xml
        ==>
     Parm_type = F_marshal