pythonexception错误subprocess文件丢失 – 但是什么文件?

我有一个代码运行在Python 2.7.3(窗口),我试图运行它在Python 2.7.8(Windows),并得到以下错误:

主:信息**启动主**

Traceback (most recent call last): File "C:\wamp\www\prenderer\src\main.py", line 82, in <module> nuke_process = launch_nuke() File "C:\wamp\www\prenderer\src\main.py", line 31, in launch_nuke query = subprocess.Popen(r"query process", stdout=subprocess.PIPE) File "F:\python27\lib\subprocess.py", line 710, in __init__ errread, errwrite) File "F:\python27\lib\subprocess.py", line 958, in _execute_child startupinfo) WindowsError: [Error 2] The system cannot find the file specified >>> 

哪里不对?

传递shell=True参数:

 query = subprocess.Popen(r"query process", stdout=subprocess.PIPE, shell=True) 

或者将命令行参数作为列表传递:

 query = subprocess.Popen(["query", "process"], stdout=subprocess.PIPE) 

否则, query process被识别为程序而不是query