tuple to string?

[Steven D'Aprano]

On Fri, 22 Jul 2005 06:07:28 -0700, Robert Kern wrote:

> Francois De Serres wrote:
>> hiho,
>> 
>> what's the clean way to translate the tuple (0x73, 0x70, 0x61, 0x6D) to 
>> the string 'spam'?
> 
> In [1]: t = (0x73, 0x70, 0x61, 0x6D)
> 
> In [2]: ''.join(chr(x) for x in t)
> Out[2]: 'spam'

I get a syntax error when I try that. I guess anyone who hasn't started
using Python 2.4 will also get the same error.

Since t is just a tuple, there isn't a big advantage as far as I can
see to build up and dispose of the generator machinery just for grabbing
the next item in a tuple. So a list comprehension will work just as well,
and in older versions of Python:

''.join([chr(x) for x in (0x73, 0x70, 0x61, 0x6D)])

For an even more version-independent method:

L = []
for n in (0x73, 0x70, 0x61, 0x6D):
    L.append(chr(n))
print ''.join(L)


or even:

>>> ''.join(map(lambda n: chr(n), (0x73, 0x70, 0x61, 0x6D)))
'spam'



-- 
Steven.