getting data off a CDrom

[julien.lord@gmail.com]

Hi there,

I'm trying to load data from 2 different CD drives to compare the data
on them to see if they are identical. I've found the WinCDRom module
online but it doesn't seem to give access to the data at all. The only
thing it seems to do is check if there is a readable cd in a specific
drive.

Any ideas/suggestions/flames?

Thanks,

Julien

[Irmen de Jong]

Re: getting data off a CDrom

julien.lord@gma il.com wrote:[color=blue]
> Hi there,
>
> I'm trying to load data from 2 different CD drives to compare the data
> on them to see if they are identical. I've found the WinCDRom module
> online but it doesn't seem to give access to the data at all. The only
> thing it seems to do is check if there is a readable cd in a specific
> drive.
>
> Any ideas/suggestions/flames?[/color]

If you're on Linux this should do the trick, i think:

$ cmp /dev/scd0 /dev/scd1


--Irmen

[Larry Bates]

Re: getting data off a CDrom

julien.lord@gma il.com wrote:[color=blue]
> Hi there,
>
> I'm trying to load data from 2 different CD drives to compare the data
> on them to see if they are identical. I've found the WinCDRom module
> online but it doesn't seem to give access to the data at all. The only
> thing it seems to do is check if there is a readable cd in a specific
> drive.
>
> Any ideas/suggestions/flames?
>
> Thanks,
>
> Julien
>[/color]
The two CDROMs should show up with drive letters attached (Windows) on
your machine. Just open the files on both machines as you would any other
file:

fp1=open(r'D:\f ilename1', 'r')
fp2=open(r'E:\f ilename2', 'r')

You could:

1) use md5 to calculate checksums on both files and compare

or

2) you could use difflib instead see:

http://docs.python.org/lib/module-difflib.html

difflib probably works best if the files are text files.

3) do something custom to compare the files, but I would
try 1) and 2) first.

Larry Bates