Fredrik Lundh wrote:
>> But in most cases the 'constant' is actually an expression involving a
>> global, often even a global in another module. (E.g. sre_compile.py)
>> The compiler will have a hard time proving that this is really a
>> constant, so it won't optimize the code.
>
> unless we come up with a way to make it possible to mark an variable as
> a constant.
such as the primary
'constant' expr
which simply means that expr will be evaluated at function definition
time, rather than at runtime. example usage:
var = expression
if var == constant sre.FOO:
...
elif var == constant sre.BAR:
...
elif var in constant (sre.FIE, sre.FUM):
...
</F>
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