indeed. There are better options than the one I attempted. Thanks for the
advice
Am Mi., 28. Juli 2021 um 18:19 Uhr schrieb Chris Angelico <ros...@gmail.com
>:
> On Thu, Jul 29, 2021 at 2:10 AM joseph pareti <joeparet...@gmail.com>
> wrote:
> >
> > The following code fails as shown in the title:
> >
> >
> >
> >
> >
> >
> > *import subprocesscmd = 'ls -l
> >
> /media/joepareti54/Elements/x/finance-2020/AI/Listen_attend_spell/VCTK-Corpus/wav48
> > | awk "{print $9 }"'process = subprocess.Popen([cmd],
> > stdout=subprocess.PIPE, stderr=subprocess.PIPE)stdout, stderr =
> > process.communicate()print('stdout ',stdout)print('stderr ',stderr)*
> >
> > ----
> >
> > Traceback (most recent call last):
> > File "PreProcess_1a.py", line 3, in <module>
> > process = subprocess.Popen([cmd], stdout=subprocess.PIPE,
> > stderr=subprocess.PIPE)
> > File "/home/joepareti54/anaconda3/lib/python3.8/subprocess.py", line
> 854,
> > in __init__
> > self._execute_child(args, executable, preexec_fn, close_fds,
> > File "/home/joepareti54/anaconda3/lib/python3.8/subprocess.py", line
> > 1702, in _execute_child
> > raise child_exception_type(errno_num, err_msg, err_filename)
> > FileNotFoundError: [Errno 2] No such file or directory: 'ls -l
> >
> /media/joepareti54/Elements/x/finance-2020/AI/Listen_attend_spell/VCTK-Corpus/wav48
> > | awk "{print $9
> >
>
> First off, you'll want to post code in a way that keeps the
> formatting, otherwise it becomes very hard to read.
>
> But the immediate problem here is that Popen takes an array of command
> arguments, NOT a shell command line. You cannot invoke ls and pipe it
> into awk this way.
>
> Don't think like a shell script. Python has very good
> directory-listing functionality, and you will very very seldom need to
> shell out to pipelines. Figure out what you actually need to learn
> from the directory listing and get that information directly, rather
> than trying to use two external commands and text parsing. It's far
> FAR easier, cleaner, and safer that way.
>
> ChrisA
> --
> https://mail.python.org/mailman/listinfo/python-list
>
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Regards,
Joseph Pareti - Artificial Intelligence consultant
Joseph Pareti's AI Consulting Services
https://www.joepareti54-ai.com/
cell +49 1520 1600 209
cell +39 339 797 0644
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