code: def __init__(self, f, n):
      self.f = f
      self.n = n
  
imports: import math
  from collections.abc import Iterable
  import numpy
  import sacrebleu
  import sklearn.metrics
  import random
  from collections import defaultdict
label_desc: Use image node_id 1 to create a new _bootstrap_internal object  with example: obj = _bootstrap_internal(f, n)