I need to retract this. os.popen() has a 'mode' flag that indicates
reading or writing but also specifies text vs. binary. So
os.popen(..., 'r') should return a text stream, while os.popen(...,
'rb') should return a binary stream.
The subprocess module has similar options, though the default is
ge
2008/4/22, Guido van Rossum <[EMAIL PROTECTED]>:
> I still think os.popen() should be reimplemented on top of subprocess,
> and add the same optional flags as the open() function has grown to
> indicate encoding and buffering.
os.popen() is deprecated in 2.6, with the recommendation of using t
On Tue, Apr 22, 2008 at 12:57:56PM -0300, Facundo Batista wrote:
>
> - Why can't I write "ls -l", instead of ["ls", "-l"] (people ends
> writing "ls -l".split())
That's the best thing about subprocess. Whenever I've used APIs that
accept a single string instead of list of arguments, I've quickly
2008/4/22, Andrew McNabb <[EMAIL PROTECTED]>:
> That's the best thing about subprocess. Whenever I've used APIs that
> accept a single string instead of list of arguments, I've quickly
> descended into quoting hell.
I don't understand why, could you please provide me one example or two?
Thank
On Tue, Apr 22, 2008 at 03:33:30PM -0300, Facundo Batista wrote:
> 2008/4/22, Andrew McNabb <[EMAIL PROTECTED]>:
>
> > That's the best thing about subprocess. Whenever I've used APIs that
> > accept a single string instead of list of arguments, I've quickly
> > descended into quoting hell.
>
>
On 22/04/2008, Facundo Batista <[EMAIL PROTECTED]> wrote:
> 2008/4/22, Andrew McNabb <[EMAIL PROTECTED]>:
>
>
> > That's the best thing about subprocess. Whenever I've used APIs that
> > accept a single string instead of list of arguments, I've quickly
> > descended into quoting hell.
>
>
> I
On Tue, Apr 22, 2008 at 01:39:11PM -0600, Andrew McNabb wrote:
> "cat %s" % filename
>
> then your program would break if filename contained spaces.
It'd break even worse if the filename contains ';' or any other
command-separated character (&&, ||, etc.)
Oleg.
--
Oleg Broytmann
On Tue, Apr 22, 2008 at 8:57 AM, Facundo Batista
<[EMAIL PROTECTED]> wrote:
> 2008/4/22, Guido van Rossum <[EMAIL PROTECTED]>:
> > I still think os.popen() should be reimplemented on top of subprocess,
> > and add the same optional flags as the open() function has grown to
> > indicate encodi
2008/4/22, Andrew McNabb <[EMAIL PROTECTED]>:
> Here's a really simple example:
>
> ("bash", "-c", 'FILE="/tmp/a b c"; cat "$FILE"')
>
> That's pretty simple as a list of arguments. But if you do it as a
> single string, you get:
>
> 'bash -c \'FILE="/tmp/a b c"; cat "$FILE"\''
>
> It can ge
On Tue, Apr 22, 2008 at 04:52:42PM -0300, Facundo Batista wrote:
>
> I think that force me to write a tuple or a list just in case I'd need
> to write a string that uses simple and double quotes, or backslashes,
> because it's "ugly", don't worth it.
Or spaces, or user input, or any special shell
On Tue, 22 Apr 2008 16:52:42 -0300 "Facundo Batista" <[EMAIL PROTECTED]> wrote:
> 2008/4/22, Andrew McNabb <[EMAIL PROTECTED]>:
>
> > Here's a really simple example:
> >
> > ("bash", "-c", 'FILE="/tmp/a b c"; cat "$FILE"')
> >
> > That's pretty simple as a list of arguments. But if you do it a
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