Mostly because the behavior is implementation defined. So long as the behavior meets the contract, the compiler/interpreter is free to do whatever it wants.
Python could certainly optimize repeated code paths to make them more efficient. I don’t know that the standard implementation actually does, but it could. Spending extra time optimizing repeated code paths is a reasonable choice for an interpreted or JIT compiled language.
I would not expect C to change from invocation to invocation mostly because C is supposed to be boring and predictable. That’s kind of its thing. But again, it could. There’s nothing in the C spec I’m aware of that says the C compiler has to ensure that each invocation of a piece of code will execute the same machine instructions.
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Mostly because the behavior is implementation defined. So long as the behavior meets the contract, the compiler/interpreter is free to do whatever it wants.
Python could certainly optimize repeated code paths to make them more efficient. I don’t know that the standard implementation actually does, but it could. Spending extra time optimizing repeated code paths is a reasonable choice for an interpreted or JIT compiled language.
I would not expect C to change from invocation to invocation mostly because C is supposed to be boring and predictable. That’s kind of its thing. But again, it could. There’s nothing in the C spec I’m aware of that says the C compiler has to ensure that each invocation of a piece of code will execute the same machine instructions.