code: def test_newtons_method_function__pycode():
      x = Symbol("x", real=True)
      expr = cos(x) - x**3
      func = newtons_method_function(expr, x)
      py_mod = py_module(func)
      namespace = {}
      exec(py_mod, namespace, namespace)
      res = eval("newton(0.5)", namespace)
      assert abs(res - 0.865474033102) < 1e-12
  
imports: import tempfile
  from sympy import log, Min, Max, sqrt
  from sympy.core.numbers import Float
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.trigonometric import cos
  from sympy.codegen.ast import Assignment, Raise, RuntimeError_, QuotedString
  from sympy.codegen.algorithms import newtons_method, newtons_method_function
  from sympy.codegen.cfunctions import expm1
  from sympy.codegen.fnodes import bind_C
  from sympy.codegen.futils import render_as_module
  from sympy.codegen.pyutils import render_as_module
  from sympy.external import import_module
  from sympy.printing.codeprinter import ccode
  from sympy.utilities._compilation import compile_link_import_strings, has_c, has_fortran
  from sympy.utilities._compilation.util import may_xfail
  from sympy.testing.pytest import skip, raises
label_desc: Use image node_id 4 for calling a global function with example usage: test_newtons_method_function__pycode() without return types