Alexandru Moșoi wrote:
From: "Cesare Di Mauro" <[email protected]>
So if Python will generate
LOAD_CONST 1
LOAD_CONST 2
BINARY_ADD
the constant folding code will simply replace them with a single
LOAD_CONST 3
When working with such kind of optimizations, the temptation is to
apply them at any situation possible. For example, in other languages
this
a = b * 2 * 3
will be replaced by
a = b * 6
In Python I can't do that, because b can be an object which overloaded
the * operator, so it *must* be called two times, one for 2 and one for 3.
Not necessarily. For example C/C++ doesn't define the order of the
operations inside an expression (and AFAIK neither Python)
Yes is does. Expression/Evaluation order "Python evaluates expressions
from left to right."
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