input: from typing import List
  
  def runningTotal(arr: List[int]) -> List[int]:
      """ Return an array with the running total of numbers in the given list using numpy's cumsum function.
      >>> runningTotal([1, 2, 3, 4])
      array([1, 3, 6, 10])
      >>> runningTotal([0, 0, 0, 0])
      array([0, 0, 0, 0])
      """
      import numpy as np
      return np.cumsum(arr)
output:     import numpy as np
      return np.cumsum(arr)