Get a named float value.

	function Start() {
		renderer.material.shader = Shader.Find("Specular");
		print(renderer.material.GetFloat("_Shininess"));
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Start() {
        renderer.material.shader = Shader.Find("Specular");
        print(renderer.material.GetFloat("_Shininess"));
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Start() as void:
		renderer.material.shader = Shader.Find('Specular')
		print(renderer.material.GetFloat('_Shininess'))