[Tutor] new to python error handling question

[Erick]

Hi i started playing with python 2-3 days. i'm developping an FTP software.
i use some error handling 
here's how it goes:
  def do_list(*??*):
        try:
            ftp.retrlines("list")
            pass
        except (AttributeError):
            print "AttributeError"
            pass
        return ()
Why does it for sure detect AttributError when if i take the Try,Except off, it does'nt.
Also i'm not totally sur how to decide what goes in (*??*)
For this one i putted (ftp, retrlines). It does'nt cause any problem put i dont think its right because i could put anything and it would do fine.....What is the difference?????
 
Eric
  


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