old_contents: # -*- coding: utf-8 -*-
  
  """
  Cubic spline approximation (smoothing)
  """
  
  from csaps._version import __version__  # noqa
  
  from csaps._base import (
      SplinePPForm,
      UnivariateCubicSmoothingSpline,
      MultivariateCubicSmoothingSpline,
      NdGridCubicSmoothingSpline,
  )
  
  from csaps._types import (
      UnivariateDataType,
      UnivariateVectorizedDataType,
      MultivariateDataType,
      NdGridDataType,
  )
  
  __all__ = [
      'SplinePPForm',
      'UnivariateCubicSmoothingSpline',
      'MultivariateCubicSmoothingSpline',
      'NdGridCubicSmoothingSpline',
  
      # Type-hints
      'UnivariateDataType',
      'UnivariateVectorizedDataType',
      'MultivariateDataType',
      'NdGridDataType',
  ]
  
new_contents: # -*- coding: utf-8 -*-
  
  """
  Cubic spline approximation (smoothing)
  """
  
  from csaps._version import __version__  # noqa
  
  from csaps._base import (
      SplinePPForm,
      NdGridSplinePPForm,
      UnivariateCubicSmoothingSpline,
      MultivariateCubicSmoothingSpline,
      NdGridCubicSmoothingSpline,
  )
  
  from csaps._types import (
      UnivariateDataType,
      UnivariateVectorizedDataType,
      MultivariateDataType,
      NdGridDataType,
  )
  
  __all__ = [
      'SplinePPForm',
      'NdGridSplinePPForm',
      'UnivariateCubicSmoothingSpline',
      'MultivariateCubicSmoothingSpline',
      'NdGridCubicSmoothingSpline',
  
      # Type-hints
      'UnivariateDataType',
      'UnivariateVectorizedDataType',
      'MultivariateDataType',
      'NdGridDataType',
  ]
  
subject: Add NdGridSplinePPForm to csaps imports