code: def test_commutator_identities():
      assert AComm(a * A, b * B) == a * b * AComm(A, B)
      assert AComm(A, A) == 2 * A**2
      assert AComm(A, B) == AComm(B, A)
      assert AComm(a, b) == 2 * a * b
      assert AComm(A, B).doit() == A * B + B * A
  
file_path: sympy/sympy/physics/quantum/tests/test_anticommutator.py
imports: from sympy.core.numbers import Integer
  from sympy.core.symbol import symbols
  from sympy.physics.quantum.dagger import Dagger
  from sympy.physics.quantum.anticommutator import AntiCommutator
  from sympy.physics.quantum.operator import Operator
label_desc: Use image node_id 2 for calling a global function with example usage: test_commutator_identities() without return types