On Wed, 04 Jan 2006 13:18:32 +0100, Riko Wichmann wrote: > I'm googeling since some time, but can't find an answer - maybe because > the answer is 'No!'. > > Can I call a function in python inline, so that the python byte compiler > does actually call the function, but sort of inserts it where the inline > call is made? Therefore avoiding the function all overhead.
In standard python, the answer is no. The reason is that all python functions are effectively "virtual", and you don't know *which* version to inline. HOWEVER, there is a slick product called Psyco: http://psyco.sourceforge.net/ which gets around this by creating multiple versions of functions which contain inlined (or compiled) code. For instance, if foo(a,b) is often called with a and b of int type, then a special version of foo is compiled that is equivalent performance wise to foo(int a,int b). Dynamically finding the correct version of foo at runtime is no slower than normal dynamic calls, so the result is a very fast foo function. The only tradeoff is that every specialized version of foo eats memory. Psyco provides controls allowing you to specialize only those functions that need it after profiling your application. -- Stuart D. Gathman <[EMAIL PROTECTED]> Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154 "Confutatis maledictis, flamis acribus addictis" - background song for a Microsoft sponsored "Where do you want to go from here?" commercial. -- http://mail.python.org/mailman/listinfo/python-list
