On Wed, Feb 10, 2010 at 1:45 AM, Peter Otten <__pete...@web.de> wrote:
> A basic implementation without regular expressions:
>
> >>> def picture(s, pic, placeholder="@"):
> ... parts = pic.split(placeholder)
> ... result = [None]*(len(parts)+len(s))
> ... result[::2] = parts
> ... result[1::2] = s
> ... return "".join(result)
> ...
> >>>
> >>> picture("123456789", "(@@@)-@@-(@@@)[...@]")
> '(123)-45-(678)[9]'
>
Huh. This is the best version of those posted, I think (especially including
mine! My jumping to regex is worthy of shame, sh ame).
It took a little bit to figure out what was really going on here, but its a
single-pass through to do it without recursion or building a bunch of
intermediate strings that are concatenated and dropped away.
Its clever, and I don't mean that in the bad way, because -all- the
solutions are pretty clever in the sneaky-tricky-neat way. But this is
clever-cool.
Just slightly dark-voodoo-incantation-esque. Slightly!
--S
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