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Type issues when using pyo3 function signatures #82

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CSNWEB opened this issue Sep 18, 2024 · 4 comments · May be fixed by #125
Open

Type issues when using pyo3 function signatures #82

CSNWEB opened this issue Sep 18, 2024 · 4 comments · May be fixed by #125

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@CSNWEB
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CSNWEB commented Sep 18, 2024

Hello,

I faced an issue when using the generator together with pyo3 function signatures and Optional values. If I add the generator macro at the bottom I get useful types, but the optional arguments are missing a default value. For example this generates

#[pyfunction]
#[pyo3(signature = (inputs, output, size_dict, use_ssa=None))]
#[gen_stub_pyfunction]
fn optimize_simplify(
    inputs: Vec<Vec<char>>,
    output: Vec<char>,
    size_dict: Dict<char, f32>,
    use_ssa: Option<bool>,
) -> SSAPath {
}

this

def optimize_simplify(inputs:typing.Sequence[typing.Sequence[str]],output:typing.Sequence[str],size_dict:typing.Mapping[str, float],use_ssa:typing.Optional[bool]) -> list[list[int]]:
    ...

However this then throws an error in python when not specifiying all optional arguments. If I use the generator macro at the top the signature is fine, but the types are all gone:

#[gen_stub_pyfunction]
#[pyfunction]
#[pyo3(signature = (inputs, output, size_dict, use_ssa=None))]
...
def optimize_simplify(inputs,output,size_dict,use_ssa = ...) -> list[list[int]]:
    ...
@Tristramg
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I stumbled on the same problem.

As my functions are defined in an impl using #[gen_stub_pyclass], I get the second situation you describe

This was referenced Sep 19, 2024
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@ThatOneShortGuy
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In my experience, #[gen_stub_pyfunction] (or similar) needs to be the first macro. Otherwise, it doesn't generate right or at all.

@CSNWEB
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CSNWEB commented Sep 19, 2024

But in this case putting it first gives no types at all.

@tvanbaak tvanbaak mentioned this issue Nov 1, 2024
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@flying-sheep flying-sheep mentioned this issue Nov 18, 2024
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@flying-sheep
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Also in case of an #[gen_stub_pymethods] impl ... block, the pyo3(signature = ...) is always on methods inside of the block.

@flying-sheep flying-sheep mentioned this issue Nov 19, 2024
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@flying-sheep flying-sheep linked a pull request Dec 18, 2024 that will close this issue
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Simplify __new__ flying-sheep/pyo3-stub-gen
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@Tristramg @flying-sheep @CSNWEB @ThatOneShortGuy