Host Python In your Application with IronPython2.0.1 (一): 建立互動環境

上一次用了以前下載的IronPython 2.0 A1版, 今天下載了正式版2.0.1,發現變化不小啊...我過時了.

原有的代碼已經不能正常運行, 於是在2.0.1正式版上再調整了一下.

using System;using System.Collections.Generic;using System.Text;using IronPython.Hosting;using IronPython.Runtime;using Microsoft.Scripting;using Microsoft.Scripting.Hosting;namespace IPConsole {    class Program {        static void Main(string[] args) {            /*             * 方法一: 通過ScriptRuntimeSetup讀取設定檔,載入動態語言引擎            ScriptRuntimeSetup srs = ScriptRuntimeSetup.ReadConfiguration();            ScriptRuntime runtime = new ScriptRuntime(srs);            ScriptEngine engine = runtime.GetEngine("Python");            *****/            /*             * 方法二:通過ScriptRuntime讀取設定檔,載入引擎            ScriptRuntime runtime = ScriptRuntime.CreateFromConfiguration();            ScriptEngine engine = runtime.GetEngine("Python");             * ***/            /*             * 方法三:直接建立引擎             * ***/            ScriptEngine engine = Python.CreateEngine();            StringBuilder cmdBuff = new StringBuilder();            string line = "";            Console.WriteLine(string.Format("IronPython {0} ",  engine.LanguageVersion));  //print version            ScriptScope scope = engine.CreateScope();            //進入互動            while (true) {                if (cmdBuff.Length == 0) {                    Console.Write(">>> ");  //first prompt                }                else {                    Console.Write("... ");  //2nd and above prompt                }                //get command line                line = Console.ReadLine();                cmdBuff.AppendLine(line);                if (line.StartsWith(" ") | line.StartsWith("\t") | line.EndsWith(":")){                    //do nothing...get next input                 }                else {                    //get the command and execute it                    string cmd = cmdBuff.ToString();                    try {                        if (cmd.TrimEnd() == "quit") break;                        //需要建立ScriptSource執行,InteractiveCode為互動環境                        ScriptSource source = engine.CreateScriptSourceFromString(cmd, SourceCodeKind.InteractiveCode);                        source.Execute(scope);                    }                    catch (Exception e) {                        Console.WriteLine(e.Message);                    }                    //clear command buffer                    cmdBuff.Length = 0;                 }            }            Console.WriteLine("Quit");        }    }}

在這裡,建立引擎共有三種方式,其中前兩種需要設定檔app.config配合, 如下:

<?xml version="1.0" encoding="utf-8" ?><configuration>  <configSections>    <section name="microsoft.scripting" type="Microsoft.Scripting.Hosting.Configuration.Section, Microsoft.Scripting" requirePermission="false" />  </configSections>  <microsoft.scripting>    <languages>      <language names="IronPython,Python,py"                extensions=".py"                displayName="IronPython 2.0.1"                type="IronPython.Runtime.PythonContext,IronPython" />      <!-- 可以添加其它引擎, 如IronRuby -->    </languages>  </microsoft.scripting></configuration>

再看一下測試結果吧, 比原來好了. 因為這個互動模式: 輸入a也會顯示a的值了,而不一定非要print

IronPython 2.0.0.0>>> a=1>>> a1>>> b=2>>> b2>>> a==bFalse>>> def hello(name):...     print "hello %s" % name...>>> hello('hydonlee')hello hydonlee>>> quitQuit

以後的工作將在2.0.1正式版上進行.不過, 我沒有找到api文檔?alpha版都有,為什麼正式版沒有了?