C#中添加对python文件或者对python包的引用时出现"no module .."的问题时的解决办法。

对hello.py 做一些简单的修改

添加

import syssys.path.append(<DIR>)

因为我的hashlib在该目录"D:\IronPython2.7\Lib"下，<DIR>为"D:\IronPython2.7\Lib

def load_config(keyword_category, config_path = r'./config'):    #load keywords under designated category from config file    ###INPUT: str keyword_category -> also serves as name of config file; _       #str config_path -> location of config files    ###OUTPUT: list result -> keywords loaded from config file    import os.path    config_file = os.path.join(config_path, keyword_category+'.txt')    f = read(config_file, 'r')    result = []    for line in f:        result.append(line.replace('\n','').decode('utf8'))    f.close()    return result

在C#这一端，调用代码如下（项目已经添加引用ironpython.dll, ironpython.hosting.dll, microsoft）：

public string[] GetKeywords(string category, string config_path){       ScriptRuntime pyRunTime = Python.CreateRuntime();       dynamic pyScript = pyRunTime.UseFile(@".\python scripts\file_utils.py");       List
     
       tmp = pyScript.load_config(category, config_path);       tmp.TrimExcess();       string[] result = tmp.ToArray();       return result;}
     

运行时VS2013反馈的错误信息如下：

An unhandled exception of type 'IronPython.Runtime.Exceptions.ImportException' occurred in Microsoft.Dynamic.dll

Additional information: No module named os.path

很奇怪的一点是，其他python代码里引用os等标准库完全没有问题，不知道为什么惟独os.path会出现问题