code: def _numpy_to_cython(dtype):
      cython = pytest.importorskip("cython")
      if dtype == np.float32:
          return cython.float
      elif dtype == np.float64:
          return cython.double
  
file_path: scikit-learn/sklearn/utils/tests/test_cython_blas.py
imports: import numpy
  import pytest
  from sklearn.utils._cython_blas import ColMajor, NoTrans, RowMajor, Trans, _asum_memview, _axpy_memview, _copy_memview, _dot_memview, _gemm_memview, _gemv_memview, _ger_memview, _nrm2_memview, _rot_memview, _rotg_memview, _scal_memview
  from sklearn.utils._testing import assert_allclose
label_desc: Use image node_id 1 for calling a global function with example usage: _numpy_to_cython(dtype) and returns: cython, cython