class_docstr: Defines a bin specified by an interval [left_end, right_end) with a constant sub-score
code: def __str__(self):
      return " ".join(
          [
              str(self.left_end),
              "<=",
              str(self.feature),
              "<",
              str(self.right_end),
              "->",
              str(self.const_part),
          ]
      )
  
imports: import abc
  from numbers import Real
  from typing import Dict, Set, Any, Optional
  from aix360.algorithms.rule_induction.trxf.core import Feature
label_desc: Use image node_id 2 for calling the IntervalBin obj's underlying member method code with example usage: obj.__str__() and returns: str