ast wrote:
> If i am writing (-1)**1000 on a python program, will the
> interpreter do (-1)*(-1)*...*(-1) or something clever ?
>
> In fact i have (-1)**N with N an integer potentially big.
>
> I do some tests that suggest that Python is clever
Let's see:
$ python3
Python 3.4.0 (default, Apr 11 2014, 13:05:11)
[GCC 4.8.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import dis
>>> def f():
... return (-1)**1000
...
>>> dis.dis(f)
2 0 LOAD_CONST 4 (1)
3 RETURN_VALUE
So yes, CPython replaces the expression (-1)**1000 with its value during
compilation.
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