command line - Cannot redirect output when I run Python script on Windows using just script's name

Question

This is running on Windows 7 (64 bit), Python 2.6 with Win32 Extensions for Python.

I have a simple script that just print "hello world". I can launch it with python hello.py. In this case I can redirect the output to a file. But if I run it by just typing hello.py on the command line and redirect the output, I get an exception.

C:> python hello.py
hello world

C:> python hello.py >output

C:> type output
hello world

C:> hello.py
hello world

C:> hello.py >output
close failed in file object destructor:
Error in sys.excepthook:

Original exception was:

I think I first get this error after upgrading to Windows 7. I remember it should work in XP. I have seen people talking about this bug python-Bugs-1012692 | Can't pipe input to a python program. But that was long time ago. And it does not mention any solution.

Have anyone experienced this? Anyone can help?

Answer 1

Are you asking about this?

Windows: When executing Python scripts on the command line using file type associations (i.e. starting "script.py" instead of "python script.py"), redirects may not work unless you set a specific registry key. See the Knowledge Base article STDIN/STDOUT Redirection May Not Work If Started from a File Association.

It's in the Python README. Perhaps this patch is what you're looking for.