Use equality instead of identity check with literal

[Aloxaf]

fix part of #13 ( don't know how to fix the second error _(:з」∠)_

[thautwarm]

Hi, could you remove this as well:

moshmosh/moshmosh/extensions/pattern_matching/core.py

Line 284 in 65691b3

if -5 < get_constant(n) < 256:

If is stuffs get removed they're then useless at all.

Besides, I tried to speed up the program safely with some compile time information, and using is and is not is such a case. However it now comes that is or is not is producing warning though. I'll ask the some core developers about my concerns today, and decide whether to accept your PR recently.

[Aloxaf]

That's really magic.

If it is a way to speed up the program, how about disable the warning or tell the user to disable it?

[thautwarm]

As we're implementing compilers, It's a valid behaviour.
Also, it's compatible for almost all python implementations(many treat is as a structural equality operator for immutable data)

[thautwarm]

If it is a way to speed up the program, how about disable the warning or tell the user to disable it?

I'm working on this, and will remove the optimizations if it's impossible to suppress the warning in a hygienic way.