[Tutor] Using subprocess on a series of files with spaces

[C Smith]

Even when I am using:
re.sub('/s', '\\/s', filename)
I am still getting the same output, even trying to assign the above to
a new variable doesn't work (as I wasn't sure if re.sub returned a new
value or changed filename in place, I tried both with)
Does the Python interpreter strip off backslashes or something with strings?

On Thu, Jul 31, 2014 at 5:53 PM, C Smith <illusiontechniques at gmail.com> wrote:
>>Change:
>
>
>>subprocess.call(['ffmpeg', '-i', filename, str(track)+'.mp3'])
>
>>to:
>
>>subprocess.call(['ffmpeg', '-i', '"%s"' % filename, str(track)+'.mp3'])
>
> I still get the same errors, the filenames are passed to the shell
> without escaping the spaces.
>
>>Why not using ffmpeg without jumping into Python. It's well documented, check Google.
>
> I guess you mean that the ability to change multiple files with ffmpeg
> is possible. I hadn't considered that but I would rather do it with
> Python, just for the practice.
>
> On Thu, Jul 31, 2014 at 4:36 PM, Emile <emile at salesinq.com> wrote:
>> On 7/31/2014 1:19 PM, C Smith wrote:
>>>
>>> I get
>>> TypeError: unsupported operand type(s) for %: 'int' and 'str
>>> I am not understanding the use of the list inside the subprocess.call().
>>> I tried all of the following
>>> subprocess.call(['ffmpeg', '-i', '%s', str(track)+'.mp3']) % filename
>>> --gives type error stated above
>>> subprocess.call(['ffmpeg', '-i', '%s', str(track)+'.mp3'] % filename)
>>> --same
>>> subprocess.call(['ffmpeg', '-i', '%s', str(track)+'.mp3' % filename])
>>> -- TypeError: not all arguments converted during string formatting
>>> and tried all three with the triple quotes, just to be sure.
>>>
>>> On Thu, Jul 31, 2014 at 4:04 PM, Emile van Sebille <emile at fenx.com> wrote:
>>>>
>>>> You might try using '"%s"' % filename so that the name is within quotes
>>>> for the shell environment.
>>
>>
>> Change:
>>
>>
>> subprocess.call(['ffmpeg', '-i', filename, str(track)+'.mp3'])
>>
>> to:
>>
>> subprocess.call(['ffmpeg', '-i', '"%s"' % filename, str(track)+'.mp3'])
>>
>> Emile
>>
>>
>>