A trivial question about print

[Chris Liechti]

Alex Martelli <aleax at aleax.it> wrote in 
news:kTft8.6500$b62.159068 at news1.tin.it:
> Max M wrote:
>         ...
>> def newJoin(self, items):
>>      return self.join([str(i) for i in items])
>> 
>> Is there any case where it isn't applicable at all?
> 
> Could be a disaster if any item was Unicode:
> 
>>>> print ''.join(('mapp','erch',u'\u00e8')).encode('latin-1')
> mapperchè
> 
> vs:
> 
>>>> print ''.join([str(x) for x in 
> ('mapp','erch',u'\u00e8')]).encode('latin-1')
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
> UnicodeError: ASCII encoding error: ordinal not in range(128)
>>>>
> 
> but presumably you could have something subtler that used
> str() or unicode() as appropriate (maybe not trivial to
> determine what's "appropriate" in each given case).

how about a formater argument?

>>> class mystr(str):
... 	def join(self, elements, formater = None):
... 		if formater is not None:
... 			elements = map(formater, elements)
... 		return str.join(self,elements)
... 
>>> mystr(',').join(range(10),str)
'0,1,2,3,4,5,6,7,8,9'

so the user can use 'unicode', 'str' or 'curry(unicode, encoding="latin1")'
etc.

chris

PS: it would be realy cool if curry was a builtin :-)


-- 
Chris <cliechti at gmx.net>