pyanndata 0.6.0

Rust APIs
Documentation 
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use pyo3::{prelude::*, types::PyType, PyResult};

pub fn isinstance_of_csr<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    obj.is_instance(
        obj.py()
            .import("scipy.sparse")?
            .getattr("csr_matrix")?
            .downcast::<PyType>()
            .unwrap(),
    )
}

pub fn isinstance_of_csc<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    obj.is_instance(
        obj.py()
            .import("scipy.sparse")?
            .getattr("csc_matrix")?
            .downcast::<PyType>()
            .unwrap(),
    )
}

pub fn isinstance_of_arr<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    obj.is_instance(
        obj.py()
            .import("numpy")?
            .getattr("ndarray")?
            .downcast::<PyType>()
            .unwrap(),
    )
}

pub fn isinstance_of_pyanndata<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    obj.is_instance(
        obj.py()
            .import("anndata")?
            .getattr("AnnData")?
            .downcast::<PyType>()
            .unwrap(),
    )
}

pub fn isinstance_of_pandas<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    obj.is_instance(
        obj.py()
            .import("pandas")?
            .getattr("DataFrame")?
            .downcast::<PyType>()
            .unwrap(),
    )
}

pub fn isinstance_of_polars<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    obj.is_instance(
        obj.py()
            .import("polars")?
            .getattr("DataFrame")?
            .downcast::<PyType>()
            .unwrap(),
    )
}

pub fn is_none_slice<'py>(obj: &Bound<'py, PyAny>) -> PyResult<bool> {
    let py = obj.py();
    Ok(obj.is_none()
        || obj.is(&py.Ellipsis())
        || (is_slice(obj)
            && obj.eq(py.eval(
                &std::ffi::CString::new("slice(None, None, None)")?,
                None,
                None,
            )?)?))
}

fn is_slice<'py>(obj: &Bound<'py, PyAny>) -> bool {
    obj.is_instance_of::<pyo3::types::PySlice>()
}