On Thu, Dec 3, 2009 at 6:09 PM, Emmanuel Bengio <beng...@gmail.com> wrote: > I'm fairly new to the python world, and I often heard critics about it's > speed, and also about it's "non-compilability". > Then I thought, there is a complete C API that manages Python itself. > Would it be feasible to transform pure Python code into pure Python "C API" > code? It would spare the parsing time, which seems to be the an important > factor in Python's speed. > > Given the following example: > x=0 > for i in xrange(100000): > x+=x*i > On my machine, this takes 79ms to run. > while this: > PyObject* x = PyInt_FromLong(0); > int i; > for (i=0;i<100000;i++) > { > x=PyNumber_Add(x,PyNumber_Multiply(x,PyInt_FromLong(i))); > } > takes about 16 ms to run. > Any thoughts?
You're going to have to check that xrange() hasn't been rebound for starters. Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list