does os.popen() search the path?
Mark Hammond
MarkH at ActiveState.com
Sat Oct 14 10:10:11 EDT 2000
<jschmitt at vmlabs.com> wrote in message
news:8s8ubv$21q$1 at nnrp1.deja.com...
> I can get it to print the PATH environment variable and it tells me
> that things like 'grep' are in my path. Yet,
>
> cmd = os.popen( 'grep' )
>
> never launches.
Never launches, or launches and quickly terminates? "grep" with no
options will attempt to read from stdin, but no stdin it setup, so it
will exit immediately.
eg:
>>> len(os.popen("grep --help").read())
2112
> Another thing, I can also do this:
>
> cmd = os.popen( 'foo.cmd' )
os.popen simply uses "cmd.exe" (or whatever your COMSPEC is, etc), so
whatever behaviour you are seeing is cmd.exe at work.
Have you tried:
cmd = os.popen( os.path.abspath('foo.cmd') )
?
Mark.
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