code: def __init__(self):
      self.main_input_types = {}
      self.functions = {}
      self.parameters = {}
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import logging
  import numpy
  import sympy
  from .None import types
  from .block import Function
  from .var import Var
  from .types.symbolic import k_used_symbols, k_num_internal_syms
  from coremltools.converters.mil.input_types import InputType
label_desc: Use image node_id 1 to create a new Program object from inherited base classes: object with example: obj = Program()