code: def _unify_Variable_Variable(u, v, s):
      # Avoid converting to `etuple`s, when possible
      if u == v:
          yield s
          return
  
      if not u.owner and not v.owner:
          yield False
          return
  
      yield _unify(
          etuplize(u, shallow=True) if u.owner else u,
          etuplize(v, shallow=True) if v.owner else v,
          s,
      )
  
imports: from collections.abc import Mapping
  from numbers import Number
  from typing import Optional, Union
  import numpy
  from cons.core import ConsError, _car, _cdr
  from etuples import apply, etuple, etuplize
  from etuples.core import ExpressionTuple
  from unification.core import _unify, assoc
  from unification.utils import transitive_get
  from unification.variable import Var, isvar, var
  from pytensor.graph.basic import Constant, Variable
  from pytensor.graph.op import Op
  from pytensor.graph.type import Type
label_desc: Use image node_id 10 for calling a global function with example usage: _unify_Variable_Variable(u, v, s) without return types