code: def rep_innerproduct(expr, **options):
      """
      Returns an innerproduct like representation (e.g. ``<x'|x>``) for the
      given state.
  
      Attempts to calculate inner product with a bra from the specified
      basis. Should only be passed an instance of KetBase or BraBase
  
      Parameters
      ==========
  
      expr : KetBase or BraBase
          The expression to be represented
  
      Examples
      ========
  
      >>> from sympy.physics.quantum.represent import rep_innerproduct
      >>> from sympy.physics.quantum.cartesian import XOp, XKet, PxOp, PxKet
      >>> rep_innerproduct(XKet())
      DiracDelta(x - x_1)
      >>> rep_innerproduct(XKet(), basis=PxOp())
      sqrt(2)*exp(-I*px_1*x/hbar)/(2*sqrt(hbar)*sqrt(pi))
      >>> rep_innerproduct(PxKet(), basis=XOp())
      sqrt(2)*exp(I*px*x_1/hbar)/(2*sqrt(hbar)*sqrt(pi))
  
      """
  
      if not isinstance(expr, (KetBase, BraBase)):
          raise TypeError("expr passed is not a Bra or Ket")
  
      basis = get_basis(expr, **options)
  
      if not isinstance(basis, StateBase):
          raise NotImplementedError("Can't form this representation!")
  
      if "index" not in options:
          options["index"] = 1
  
      basis_kets = enumerate_states(basis, options["index"], 2)
  
      if isinstance(expr, BraBase):
          bra = expr
          ket = (
              basis_kets[1]
              if basis_kets[0].dual == expr
              else basis_kets[0]
          )
      else:
          bra = (
              basis_kets[1].dual
              if basis_kets[0] == expr
              else basis_kets[0].dual
          )
          ket = expr
  
      prod = InnerProduct(bra, ket)
      result = prod.doit()
  
      format = options.get("format", "sympy")
      return expr._format_represent(result, format)
  
imports: from sympy.core.add import Add
  from sympy.core.expr import Expr
  from sympy.core.mul import Mul
  from sympy.core.numbers import I
  from sympy.core.power import Pow
  from sympy.integrals.integrals import integrate
  from sympy.physics.quantum.dagger import Dagger
  from sympy.physics.quantum.commutator import Commutator
  from sympy.physics.quantum.anticommutator import AntiCommutator
  from sympy.physics.quantum.innerproduct import InnerProduct
  from sympy.physics.quantum.qexpr import QExpr
  from sympy.physics.quantum.tensorproduct import TensorProduct
  from sympy.physics.quantum.matrixutils import flatten_scalar
  from sympy.physics.quantum.state import KetBase, BraBase, StateBase
  from sympy.physics.quantum.operator import Operator, OuterProduct
  from sympy.physics.quantum.qapply import qapply
  from sympy.physics.quantum.operatorset import operators_to_state, state_to_operators
label_desc: Use image node_id 3 for calling a global function with example usage: rep_innerproduct(expr) and returns: expr