Redirection of stdout fails on Windows

[Joel Wagner]

I have a simple test program tst.py:

import os
os.system('echo a b c')

When run like this:

python tst.py > out

I get the expected string 'a b c' in the file 'out'.

When run like this:

tst > out

I get an error message 'The handle is invalid' and nothing in the file 'out'.

Using ActiveState Python 2.2.2 on Windows/XP Pro.

Any ideas on what the root cause is?

Thanks,

Joel

[Daniel Dittmar]

Joel Wagner wrote:

python tst.py > out

I get the expected string 'a b c' in the file 'out'.

When run like this:

tst > out

I get an error message 'The handle is invalid' and nothing in the
file 'out'.

This is a bug in cmd.exe. If script is started by looking at the extension
and then finding the real executable through the registry, redirection does
not work.

I think the easiest work around is to create batch files for every python
script you want to execute.

Daniel