code: def test_issue_18008():
      y = (
          x
          * (1 + x * (1 - x))
          / ((1 + x * (1 - x)) - (1 - x) * (1 - x))
      )
      assert y.series(x, oo, n=4) == -9 / (32 * x**3) - 3 / (
          16 * x**2
      ) - 1 / (8 * x) + S(1) / 4 + x / 2 + O(x ** (-4), (x, oo))
  
imports: from sympy.core.evalf import N
  from sympy.core.function import Derivative, Function, PoleError, Subs
  from sympy.core.numbers import E, Float, Rational, oo, pi, I
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.exponential import LambertW, exp, log
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import atan, cos, sin
  from sympy.functions.special.gamma_functions import gamma
  from sympy.integrals.integrals import Integral, integrate
  from sympy.series.order import O
  from sympy.series.series import series
  from sympy.abc import x, y, n, k
  from sympy.testing.pytest import raises
  from sympy.core import EulerGamma
  from sympy.series.acceleration import richardson, shanks
  from sympy.concrete.summations import Sum
  from sympy.core.numbers import Integer
label_desc: Use image node_id 27 for calling a global function with example usage: test_issue_18008() without return types