code: def as_int_none_variable(x):
      if x is None:
          return NoneConst
      elif NoneConst.equals(x):
          return x
      x = pytensor.tensor.as_tensor_variable(x, ndim=0)
      if x.type.dtype not in integer_dtypes:
          raise TypeError("index must be integers")
      return x
  
imports: import numpy
  import pytensor
  from pytensor import _as_symbolic
  from pytensor.gradient import DisconnectedType
  from pytensor.graph.basic import Apply, Constant, Variable
  from pytensor.graph.op import Op
  from pytensor.link.c.type import Generic, Type
  from pytensor.tensor.type import integer_dtypes
label_desc: Use image node_id 1 for calling a global function with example usage: as_int_none_variable(x) and returns: x, NoneConst, x