code: def __init__(self, k):
      self.k = k
  
imports: from typing import List
  import abc
  from pandas import DataFrame
  import pandas
  import hail
  from hail.utils.java import warning
  from .utils import should_use_scale_for_grouping
label_desc: Use image node_id 1 to create a new StatCDF object from inherited base classes: Stat with example: obj = StatCDF(k)