read from standard input
Bengt Richter
bokr at oz.net
Sun Aug 11 23:35:55 EDT 2002
On Fri, 9 Aug 2002 16:04:31 +0200, "Jaroslav Jákl" <j.jakl at era.cz> wrote:
>Hi all,
>I want to read from stdin. I have the following script:
>
>import sys
>for line in sys.stdin.readlines():
> print line
>
>and if i execute it like script.py < file, i get IOError: [Errno 9] Bad file
>descriptor.
>Can anybody advise me?
>thanks
>Jaroslav Jakl
>
You are apparently on windows? Try running python explicitly. The thing created by
automatic data file extension to run an app doesn't do i/o redirection properly.
E.g., this is on NT4 with python 2.2
[20:40] C:\pywk\junk>type script.py
import sys
for line in sys.stdin.readlines():
print line
[20:41] C:\pywk\junk>echo test.txt >test.txt
[20:41] C:\pywk\junk>script.py < test.txt
Traceback (most recent call last):
File "C:\pywk\junk\script.py", line 2, in ?
for line in sys.stdin.readlines():
IOError: [Errno 9] Bad file descriptor
[20:42] C:\pywk\junk>python script.py < test.txt
test.txt
Regards,
Bengt Richter
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