class_docstr: This is an empty class that inherit from A3 and B1
      
class_docstr_tok: ["This","is","an","empty","class","that","inherit","from","A3","and","B1"]
code: def __init__(self, x0: int, y1: float = 1.0):
      A3.__init__(self, x0, y1=y1)
      B1.__init__(self, x0)
  
imports: import sys
  import unittest
  from tick.base import Base
  from tick.base.build.base import A0
label_desc: Use image node_id 1 to create a new A4 object from inherited base classes: A3, B1 with example: obj = A4(x0, y1)