code: def test_with_constants(self):
      x, y, z = inputs()
      e = mul(add(70.0, y), div_proxy(x, y))
      C = Composite([x, y], [e])
      c = C.make_node(x, y)
      assert "70.0" in c.op.c_code(
          c, "dummy", ["x", "y"], ["z"], dict(id=0)
      )
      # print c.c_code(['x', 'y'], ['z'], dict(id = 0))
      g = FunctionGraph([x, y], [c.out])
      fn = gof.DualLinker().accept(g).make_function()
      assert fn(1.0, 2.0) == 36.0
  
imports: from __future__ import absolute_import, print_function, division
  import unittest
  import numpy
  import theano
  from theano.gof import FunctionGraph
  from theano import gof
  from theano.tests import unittest_tools
  from theano.scalar.basic import floats, float16, float32, float64, ints, int8, int32, complex64, uint8, ComplexError, IntDiv, TrueDiv, Composite, add, div_proxy, and_, eq, neq, invert, mul, Scalar, InRange, cast, constant, switch
  from theano.scalar.basic import true_div, inv, log, log2, log10, log1p, exp, exp2, expm1, sqrt, deg2rad, rad2deg, cos, arccos, sin, arcsin, tan, arctan, arctan2, cosh, arccosh, sinh, arcsinh, tanh, arctanh
label_desc: Use image node_id 4 for calling the test_composite obj's underlying member method code with example usage: obj.test_with_constants() without return types