Hi Gurus, I'm new to Python programming and in the process of learning the sub process module.
I went through the python documentation http://docs.python.org/library/subprocess.html and I have the following queries 1. The class definition as per the documentation is: *class *subprocess.Popen(*args*, *bufsize=0*, *executable=None*, *stdin=None *, *stdout=None*, *stderr=None*, *preexec_fn=None*, *close_fds=False*, * shell=False*, *cwd=None*, *env=None*, *universal_newlines=False*, * startupinfo=None*, *creationflags=0*) *args* should be a string, or a sequence of program arguments. so I assume that args can be a string or a list with first item of the list being the program to execute. so on the python IDLE, I executed this command, >>> subprocess.Popen('cmd.exe') <subprocess.Popen object at 0x00F5AA50> which opened up a command prompt. when I give this as a list, as below it throwed this error. >>> subprocess.Popen(['cmd.exe', 'dir']) Traceback (most recent call last): File "<pyshell#29>", line 1, in <module> subprocess.Popen(['cmd.exe' 'dir']) File "C:\Python26\lib\subprocess.py", line 623, in __init__ errread, errwrite) File "C:\Python26\lib\subprocess.py", line 833, in _execute_child startupinfo) WindowsError: [Error 2] The system cannot find the file specified >>> I would assume that a list is accepted as part of the args and first being the program (cmd.exe) and the rest being the arguments... please correct me If i misunderstood. Thanks, -- Vijay Swaminathan
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