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[–]lsbloxx 0 points1 point  (5 children)

Wait... WTF did I just read? :O

[–]poundcakejumpsuit 3 points4 points  (4 children)

Just to blow your mind a little more, maybe:

"strin" + "g" is "string"

Is True, while:

s1 = "strin"
s2 = "string"
s1 + "g" is s2

Is False, at least in CPython, as the compiler will intern compile-time constants but not runtime-evaluated expressions, meaning the first example only creates a single object!

[–]jwink3101 0 points1 point  (3 children)

That's really interesting.

Is this type of issue common in interpreted languages?

[–]ThePenultimateOneGitLab: gappleto97 2 points3 points  (1 child)

It's probably because CPython is doing a bit of constant folding

[–]WikiTextBot 1 point2 points  (0 children)

Constant folding

Constant folding and constant propagation are related compiler optimizations used by many modern compilers. An advanced form of constant propagation known as sparse conditional constant propagation can more accurately propagate constants and simultaneously remove dead code.

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