code: def basic_statistics(TP, TN, FP, FN):
      """
      Init classes' statistics.
  
      :param TP: true positive
      :type TP: dict
      :param TN: true negative
      :type TN: dict
      :param FP: false positive
      :type FP: dict
      :param FN: false negative
      :type FN: dict
      :return: basic statistics as dict
      """
      result = {}
      for i in CLASS_PARAMS.keys():
          result[i] = {}
      result["TP"] = TP
      result["TN"] = TN
      result["FP"] = FP
      result["FN"] = FN
      return result
  
imports: from __future__ import division
  import math
  from .pycm_util import normal_quantile
  from .pycm_interpret import *
  from .pycm_param import CLASS_PARAMS
label_desc: Use image node_id 36 for calling a global function with example usage: basic_statistics(TP, TN, FP, FN) and returns: result