"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> writes:
> I am looking for the best and efficient way to replace the first word
> in a str, like this:
> "aa to become" -> "/aa/ to become"
> I know I can use spilt and than join them
> but I can also use regular expressions
> and I sure there is a lot ways, but I need realy efficient one
Assuming you know the whitespace will be spaces, I like find:
new = "/aa/" + old[old.find(' '):]
As for efficiency - I suggest you investigate the timeit module, and
do some tests on data representative of what you're actaully going to
be using.
<mike
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Mike Meyer <[EMAIL PROTECTED]> http://www.mired.org/home/mwm/
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