How can you copy (clone) a string?

[piet at cs.uu.nl]

>>>>> aahz at panix.com (Aahz Maruch) (AM) schrijft:

AM> In article <u4s2rwts1.fsf at cs.uu.nl>,  <piet at cs.uu.nl> wrote:
>> 
>> i = 0
>> s = 1000 * 'x'
>> mem = None
>> while 1:
>> i = i+1
>> mem = (mem, s+`i`)

AM> Blech.  If you're going to do a trick like that, just use a list.

Why? What's wrong with a tuple?
I used the tuple because a list would grow and would temporarily occupy
double the space while growing. 
-- 
Piet van Oostrum <piet at cs.uu.nl>
URL: http://www.cs.uu.nl/~piet [PGP]
Private email: P.van.Oostrum at hccnet.nl