code: def test_special_products():
      # Wallis product
      assert product(
          (4 * k) ** 2 / (4 * k**2 - 1), (k, 1, n)
      ) == 4**n * factorial(n) ** 2 / rf(S.Half, n) / rf(
          Rational(3, 2), n
      )
  
      # Euler's product formula for sin
      assert (
          product(1 + a / k**2, (k, 1, n))
          == rf(1 - sqrt(-a), n)
          * rf(1 + sqrt(-a), n)
          / factorial(n) ** 2
      )
  
imports: from sympy.concrete.products import Product, product
  from sympy.concrete.summations import Sum
  from sympy.core.function import Derivative, Function, diff
  from sympy.core.numbers import Rational, oo, pi
  from sympy.core.singleton import S
  from sympy.core.symbol import Dummy, Symbol, symbols
  from sympy.functions.combinatorial.factorials import rf, factorial
  from sympy.functions.elementary.exponential import exp, log
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import cos, sin
  from sympy.functions.special.tensor_functions import KroneckerDelta
  from sympy.simplify.combsimp import combsimp
  from sympy.simplify.simplify import simplify
  from sympy.testing.pytest import raises
label_desc: Use image node_id 7 for calling a global function with example usage: test_special_products() without return types