hex int and string

jessica cindyqjm at gmail.com
Sat Nov 28 04:44:59 CET 2009


On 11月27日, 下午5时35分, "84715... at qq.com" <84715... at qq.com> wrote:
> On 11月27日, 下午5时28分, luca72 <lucabe... at libero.it> 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
>
> > 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- 隐藏被引用文字 -
>
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