file seek is slow

[Antoine Pitrou]

Le Tue, 09 Mar 2010 15:56:47 -0800, Metalone a écrit :
>     for i in xrange(1000000):
>        f1.seek(0)

This is quite a stupid benchmark to write, since repeatedly seeking to 0 
is a no-op. I haven't re-read the file object code recently, but chances 
are that the Python file object has its own bookkeeping which adds a bit 
of execution time.

But I would suggest measuring the performance of *actual* seeks to 
different file offsets, before handwaving about the supposed "slowness" 
of file seeks in Python.

Regards

Antoine.