[Tutor] str format conversion help

[Alan Gauld]

"eMyListsDDg" <emylistsddg at gmail.com> wrote 

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> '\x00\x11\xb2\x00@,O\xa4'
> 
> the above str is being returned from one key/value pair in 
> a dictionary. it is the addr of a network device.
> 
> i want to store the addr's in their 8byte mac format like this,
> 
>    [00 11 b2 00 40 2C 4F A4]

Thats what you've got. The string is merely a representation 
of that data.

> the combinations of format strings using the print statement 
> hasn't resulted in what i need.

format strings are used to display data not to store it.
Do you really want to display the data in the format you've 
shown? Or do you really want to store it as 8 bytes?

The two concepts are completely different and more 
or less unrelated.

> looking for a suggestion on how to format this, 
> '\x00\x11\xb2\x00@,O\xa4' into this [00-11-B2-00-40-2C-4F-A4]

OK, to display it you need to extract each byte and convert it to 
a string representing the hex value. Fortunately you an treat a 
string of bytes as charactrers and the hex() function will give you 
the hex representation. So...

print "[%s]" % ('-'.join([hex(v) for v in theValue]) )

should be close...

HTH,


-- 
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/