code: def cumulative_sum(l, offset=0):
      """Returns cumulative sums for set of counts.
  
      Returns the cumulative sums for a set of counts with the first returned value
      starting at 0. I.e [3,2,4] -> [0, 3, 5, 9]. Keeps final sum for searching.
      Useful for reindexing.
  
      Parameters
      ----------
      l: list
          List of integers. Typically small counts.
      """
      return np.insert(np.cumsum(l), 0, 0) + offset
  
imports: import csv
  import random
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: cumulative_sum(l, offset) and returns: unknown