code: def _make_default(expr):
      # XXX: Catching TypeError like this is a bad way of distinguishing
      # instances from classes. The logic using this function should be
      # rewritten somehow.
      try:
          expr = expr()
      except TypeError:
          return expr
  
      return expr
  
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 7 for calling a global function with example usage: _make_default(expr) and returns: expr, expr