code: def test_PythonRational__pos__():
      assert +QQ(-1, 2) == QQ(-1, 2)
      assert +QQ(1, 2) == QQ(1, 2)
  
file_path: sympy/sympy/polys/tests/test_pythonrational.py
imports: from sympy.polys.domains import PythonRational
  from sympy.testing.pytest import raises
label_desc: Use image node_id 6 for calling a global function with example usage: test_PythonRational__pos__() without return types