newbie string conversion question

[Felipe Almeida Lessa]

Em Sáb, 2006-04-01 às 06:17 -0800, Rohit escreveu:
> As part of a proprietary socket based protocol I have  to convert a
> string of length 10,
> 
> 	say, "1234567890"
> 
> to send it as 5 characters such that their hex values are
> 
> 	0x21 0x43 0x65 0x87 0x09
> 
> (Hex value of each character is got by transposing two digits at a
> time)
> 
>  How can I do this in python? I would like the result to be available
> as a string since I am concatenating it to another string before
> sending it out. 

You mean:

>>> a = "1234567890"
>>> b = []
>>> for i in range(len(a)/2):
...     b.append(chr(int(a[i*2:i*2+2][::-1], 16)))
...
>>> b = ''.join(b)
>>> print b
!Ce�
>>> print repr(b)
'!Ce\x87\t'
>>> print [ord(x).__hex__() for x in b]
['0x21', '0x43', '0x65', '0x87', '0x9']

??

But I'm not sure if this is the best solution...

> Thanks,
> Rohit

HTH,

-- 
Felipe.