code: def linspaceborders(array):
      
      # Get and set left side
      dela = array[1] - array[0]
      new_arr = _np.array([array[0] - dela / 2])
  
      # Add a point to the right side so the for loop works
      delb = array[-1] - array[-2]
      array = _np.append(array, array[-1] + delb)
      for i, val in enumerate(array):
          try:
              avg = (array[i] + array[i + 1]) / 2
              new_arr = _np.append(new_arr, avg)
          except:
              pass
      # start = array[0] - dela / 2
      # end = array[-1] + dela / 2
      # return _linspacestep(start, end, dela)
      return new_arr
docs: Generate a new array with numbers interpolated between the numbers of the input array. Extrapolates elements to the left and right sides to get the exterior border as well.
      
      Parameters
      ----------
  
      array : :class:`numpy.ndarray`
          The original array.
  
      Returns
      -------
  
      array : :class:`numpy.ndarray`
          The interpolated/extrapolated array.