Simple question about how the optimizer works

[jb]

jb wrote:

>> Unless the compiler could look (somehow!) into the definition of each
>> __nonzero__, or disable optimizations if _getframe(), sys.exc_info(),
>> etc. are used *anywhere* in the Python code, then there's no way it can
>> build that optimization.

Sorry, I must have pressed some idiotic key.

And what about pure calculations? Let for example a,b and c be long
integers. Then what about
 
x1=a*b*c+1-3
y1=sqrt(a*b*c+7)

or more simply

res= a / b
rest = a % b

Can such calculations be optimized?

-- 

Janoss Blazi

"Il n'y a guère dans la vie qu'une préoccupation grave: c'est la mort;" 
(Dumas) 



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