problem with single-quote and double-quote when using subprocess.

[Evan]

Hello -

i'm trying to call subprocess.pope n on the 'command-based' function in
linux. When I run the command from the shell, like so:

goset -f ' "%s %s" name addr ' file_name

it works fine

however when I try to do it in python like so:

p = subprocess.Pope n(["goest",'-f \'\"%s %s\" name addr\' ',
'file_name'], shell=True)

It always failed.

I also try like so:

p = subprocess.Pope n(["goest","-f '\"%s %s\" name addr' ",
'file_name'], shell=True)

It also failed.

Does anybody have a good suggestion for this matter? thanks in
advance.

Evan

[alex23]

Re: problem with single-quote and double-quote when using subprocess.

On Nov 4, 8:47 am, Evan <xdi...@gmail.c omwrote:

It always failed.
It also failed.
Does anybody have a good suggestion for this matter? thanks in
advance.

What do you mean by "it failed"? It always helps to paste the actual
error message you received.

[MRAB]

Re: problem with single-quote and double-quote when using subprocess.

On Nov 3, 10:47 pm, Evan <xdi...@gmail.c omwrote:

Hello -
>
i'm trying to call subprocess.pope n on the 'command-based' function in
linux.  When I run the command from the shell, like so:
>
goset -f ' "%s %s" name addr ' file_name
>
it works fine
>
however when I try to do it in python like so:
>
p = subprocess.Pope n(["goest",'-f \'\"%s %s\" name addr\' ',
'file_name'], shell=True)
>
It always failed.
>
I also try like so:
>
p = subprocess.Pope n(["goest","-f '\"%s %s\" name addr' ",
'file_name'], shell=True)
>
It also failed.
>
Does anybody have a good suggestion for this matter? thanks in
advance.
>

It looks like there are _4_ items on the command line:

goset
-f
' "%s %s" name addr '
file_name

so the call should be:

p = subprocess.Pope n(["goest", "-f", "' \"%s %s\" name addr '",
"file_name"], shell=True)

(Untested)

[Marc 'BlackJack' Rintsch]

Re: problem with single-quote and double-quote when usingsubprocess .

On Tue, 04 Nov 2008 03:26:21 -0800, MRAB wrote:

On Nov 3, 10:47 pm, Evan <xdi...@gmail.c omwrote:

>i'm trying to call subprocess.pope n on the 'command-based' function in
>linux.  When I run the command from the shell, like so:
>>
>goset -f ' "%s %s" name addr ' file_name
>>
>it works fine

>
It looks like there are _4_ items on the command line:
>
goset
-f
' "%s %s" name addr '
file_name
>
so the call should be:
>
p = subprocess.Pope n(["goest", "-f", "' \"%s %s\" name addr '",
"file_name"], shell=True)

The argument after '-f' doesn't have the single quotes at both ends.
They tell the shell that it is just one argument and the shell removes
them before calling ``goset`` (or ``goest``).

Ciao,
Marc 'BlackJack' Rintsch