code: def _get_dtype(dtype):
      """Return np.complex128 for complex dtypes, np.float64 otherwise."""
      if np.issubdtype(dtype, np.complexfloating):
          return np.complex_
      else:
          return np.float_
  
imports: import operator
  import numpy
  from numpy.core.multiarray import normalize_axis_index
  from scipy.linalg import get_lapack_funcs, LinAlgError, cholesky_banded, cho_solve_banded, solve, solve_banded
  from .None import _bspl
  from .None import _fitpack_impl
  from .None import _fitpack
  from scipy._lib._util import prod
label_desc: Use image node_id 1 for calling a global function with example usage: _get_dtype(dtype) and returns: np, np