code: def _make_default(expr):
      # XXX: Catching TypeError like this is a bad way of distinguishing between
      # classes and instances. The logic using this function should be rewritten
      # somehow.
      try:
          ret = expr()
      except TypeError:
          ret = expr
  
      return ret
  
file_path: sympy/sympy/physics/quantum/operatorset.py
imports: from sympy.physics.quantum.cartesian import XOp, YOp, ZOp, XKet, PxOp, PxKet, PositionKet3D
  from sympy.physics.quantum.operator import Operator
  from sympy.physics.quantum.state import StateBase, BraBase, Ket
  from sympy.physics.quantum.spin import JxOp, JyOp, JzOp, J2Op, JxKet, JyKet, JzKet
label_desc: Use image node_id 3 for calling a global function with example usage: _make_default(expr) and returns: ret