On May 9, 2016 5:31 AM, "Tim Chase" <python.l...@tim.thechases.com> wrote:
>
> then that's a bad code-smell (you get quadratic behavior as the
> strings are constantly resized), usually better replaced with
>
I just want to point out that in Python s += str in loop is not giving
quadratic behavior. I don't know why but it runs fast. I'm very much
interested to know why it is so?
In [3]: %%timeit
...: s = ''
...: for x in xrange(10**6):
...: s += str(x)
...:
1 loop, best of 3: 383 ms per loop
In [4]: %%timeit
s = ''
for x in xrange(10**6):
s = s + str(x)
...:
1 loop, best of 3: 383 ms per loop
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