hex int and string

luca72 lucaberto at libero.it
Fri Nov 27 10:28:01 CET 2009


i'm using pyscard

and for send a command he need a list like this:

cmd = [0xdd,0xff, etc]

the problem is that i get a text
like dd
and i need to trasform it in 0xdd for the list and if i use hex i have
a sting that is not what i need

Luca

On 27 Nov, 10:22, Ben Finney <ben+pyt... at benfinney.id.au> wrote:
> luca72 <lucabe... at libero.it> writes:
> > str = 'D3'
>
> Be careful when choosing names. Here you have clobbered the existing
> string type binding to the name ‘str’.
>
> > and i need to trasform in 0xd3 type int and not type string how i can
> > do this?
>
> You already have the answer; you used it in your example below. I can
> only assume you're wanting something additional; what is that?
>
> > if i do hex(int(str,16) ) i obtain a string and this is not what i
> > need.
>
> You either want it as an int, or you want it as a string. Which is it?
>
>     >>> foo = 'D3'
>     >>> int(foo, 16)
>     211
>     >>> 0xD3
>     211
>     >>> int(foo, 16) == 0xD3
>     True
>
> --
>  \            “Human reason is snatching everything to itself, leaving |
>   `\                     nothing for faith.” —Saint Bernard, 1090–1153 |
> _o__)                                                                  |
> Ben Finney




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