Can't redirect output
rolney at pcug.org.au
Fri Feb 23 19:50:33 EST 2001
"Chris Gonnerman" <chris.gonnerman at usa.net> wrote:
>From: "Robert Olney" <rolney at pcug.org.au>
>Subject: Can't redirect output
>> I am running Python 2.0 on Windows 98. When I try to redirect output
>> from a command prompt, e.g.
>> C:\> python hello.py > out.txt
>> the output is printed on the screen and not to the file. Why?
>Is the output you are talking about from print commands and/or
>sys.stdout.write(...) calls, or is it error messages? Unix and Windows
>processes have two standard channels for writing messages, stdout and
>stderr, which Python maps to sys.stdout and sys.stderr. The redirection
>you show only redirects stdout/sys.stdout.
>On Unix (and reportedly Windows NT) you can write:
> python hello.py >out.txt 2>errors.txt
>which separates the output channels, or
> python hello.py >out.txt 2>&1
>to combine them in the file. Unfortunately this does not work on Win9X,
>but there is a program available called stderr which combines the two
>channels. Get it from:
>IF NONE OF THIS HELPS YOU... please post your hello.py so we can
>> mentions that this is a problem under Linux.
>I'll have to look at the FAQ, I'm not sure why Linux would have a problem
I am using normal print commands.
I have now found I can't redirect this under DOS (python 1.5.2)
More information about the Python-list