Python Interview Questions
Steven Bethard
steven.bethard at gmail.com
Wed Oct 31 10:43:18 EDT 2007
konryd wrote:
>> - string building...do they use "+=" or do they build a list
>> and use .join() to recombine them efficiently
>
>
> I'm not dead sure about that, but I heard recently that python's been
> optimized for that behaviour. That means: using += is almost as fast
> as joining list.
For some simple cases, this is true. But it only works in CPython, not
say Jython. So it's a better practice to continue using .join().
STeVe
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