[XML-SIG] HTML<->UTF-8 'codec'?

[M.-A. Lemburg]

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>I thought StringIO was also a win.
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StringIO is the fastest variant around -- if you're building large 
strings this is the
way to go.

>>> as the string gets larger the speedup of using a list can be dramatic, even
>>> more than an order of magnitude.  Anything more than a few KB for the final
>>> string would probably benefit from the list approach - especially when you
>>> add to the string a character at a time.
>>
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