hex int and string

[luca72]

i have checked and pyscard accept also the decimal notation,

Thanks

Luca

On 27 Nov, 10:38, Lie Ryan <lie.1... at gmail.com> wrote:
> On 11/27/2009 8:28 PM, luca72 wrote:
>
> > 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
>
>  >>> # Do you know that when you write
>  >>> somelist = [0xdd, 0xff, 0x34]
>  >>> # python read it as
>  >>> somelist
> [221, 255, 52]
>
> All int in python (and in fact most computers) is stored as binary
> digits; when you need a textual representation the binary digits is
> transformed into string (even decimal representation [!]). When python
> evaluates an integer literal expression, it converts them from whatever
> base it is originally in [1] to binary.
>
> [1] determined by the prefix: 0b -> binary, 0x -> hexadecimal, 0o ->
> octal, and unprefixed -> decimal.
>
> thus:
>  >>> [0xdd, 0xff, 0x34] == [221, 255, 52]
> True