old_contents: def transform_scalars(dataset):
      """Reinterpret a signed integral array type as its unsigned counterpart.
      This can be used when the bytes of a data array have been interpreted as a
      signed array when it should have been interpreted as an unsigned array."""
  
      from tomviz import utils
      import numpy as np
      scalars = utils.get_scalars(dataset)
      if scalars is None:
          raise RuntimeError("No scalars found!")
  
      dtype = scaldars.dtype
      dtype = dtype.type
  
      typeMap = {
          np.int8: np.uint8,
          np.int16: np.uint16,
          np.int32: np.uint32
      }
  
      typeAddend = {
          np.int8: 128,
          np.int16: 32768,
          np.int32: 2147483648
      }
  
      if dtype not in typeMap:
          raise RuntimeError("Scalars are not int8, int16, or int32")
  
      newType = typeMap[dtype]
      addend = typeAddend[dtype]
  
      newScalars = scalars.astype(dtype=newType) + addend
      utils.set_scalars(dataset, newScalars)
  
new_contents: def transform_scalars(dataset):
      """Reinterpret a signed integral array type as its unsigned counterpart.
      This can be used when the bytes of a data array have been interpreted as a
      signed array when it should have been interpreted as an unsigned array."""
  
      from tomviz import utils
      import numpy as np
      scalars = utils.get_scalars(dataset)
      if scalars is None:
          raise RuntimeError("No scalars found!")
  
      dtype = scalars.dtype
      dtype = dtype.type
  
      typeMap = {
          np.int8: np.uint8,
          np.int16: np.uint16,
          np.int32: np.uint32
      }
  
      typeAddend = {
          np.int8: 128,
          np.int16: 32768,
          np.int32: 2147483648
      }
  
      if dtype not in typeMap:
          raise RuntimeError("Scalars are not int8, int16, or int32")
  
      newType = typeMap[dtype]
      addend = typeAddend[dtype]
  
      newScalars = scalars.astype(dtype=newType) + addend
      utils.set_scalars(dataset, newScalars)
  
subject: Fix typo in Python script