code: def test_trace_doit():
      a, b, c, d = symbols("a b c d")
      A, B, C, D = symbols("A B C D", commutative=False)
  
file_path: sympy/sympy/physics/quantum/tests/test_trace.py
imports: from sympy.core.containers import Tuple
  from sympy.core.symbol import symbols
  from sympy.matrices.dense import Matrix
  from sympy.physics.quantum.trace import Tr
  from sympy.testing.pytest import raises, warns_deprecated_sympy
label_desc: Use image node_id 2 for calling a global function with example usage: test_trace_doit() without return types