code: def test__analyze_gens():
      assert _analyze_gens((x, y, z)) == (x, y, z)
      assert _analyze_gens([x, y, z]) == (x, y, z)
  
      assert _analyze_gens(([x, y, z],)) == (x, y, z)
      assert _analyze_gens(((x, y, z),)) == (x, y, z)
  
imports: from sympy.core.mul import Mul
  from sympy.core.numbers import Integer, pi
  from sympy.core.relational import Eq
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.exponential import exp
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import cos, sin
  from sympy.integrals.integrals import Integral
  from sympy.testing.pytest import raises
  from sympy.polys.polyutils import _nsort, _sort_gens, _unify_gens, _analyze_gens, _sort_factors, parallel_dict_from_expr, dict_from_expr
  from sympy.polys.polyerrors import PolynomialError
  from sympy.polys.domains import ZZ
label_desc: Use image node_id 4 for calling a global function with example usage: test__analyze_gens() without return types