[Tutor] Mutable String Question

[Roeland Rengelink]

Hi Marc,

Probably the easiest string 'buffer' is the list, combined with the
string method 'join'

Your example:


>>> word_list = ['My', 'name', 'is']
>>> a_string = ' '.join(word_list)
>>> a_string
'My name is'

The method join is called on a separator (in this case a space ' '), and
takes a list of string as an argument. The new string contains all the
strings from the list, sepated by the separator.

Hope this helps,

Roeland 

On Mon, 2003-08-04 at 02:56, Marc Barry wrote:
> All:
> 
> Is there a mutable string type such as a string buffer in Python?  I know 
> that string's in Python are immutable and therefore you cannot append to 
> them.  It seems terribly inefficient to do something like the following:
> 
> #------
> 
> a_string = ""
> word_list = ["My", "name", "is"]
> 
> for word in word_list:
> 	a_string = a_string + " " + word
> 
> print a_string
> 
> #------
> 
> I know that the above is a trivial example, but with the amount of text I am 
> processing this could have a significant impact on performance.  Does anyone 
> know of a better way to handle this?
> 
> Regards,
> 
> Marc
> 
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