Trouble with os.system

[Cpa]

Hi there,

I'm having some trouble with os.system on Fedora 12.
I have a bunch of .tex files in tmp/ and I want to compile them.
In my shell, the following commands work perfectly : 'for file in tmp/
*.tex; do pdflatex "$file"; done'.

But if I use the same command using os.system(), it will compile
correctly every file except the last one, for which it raises an error
(I get a prompt, as if I did a syntax error in tex document).

I suspected some kind of escaping issue, but it won't even work with
files such as : foo.txt, bar.txt.

Any idea ?
Thanks,
Cpa

[Gerald Britton]

Can you post your code?

> --
> http://mail.python.org/mailman/listinfo/python-list
>

--
Gerald Britton

[Cpa]

Sure.

import sys,re,os
files2create = sys.argv[1:]
os.system('mkdir tmp')

# Some code to create the .tex

# Compile tex files
os.system('for file in tmp/*; do pdflatex "$file"; done')

Pretty simple, alas.

--
Cpa

[Gerald Britton]

It kinda worked for me but I had to change it a little:

os.system('for file in /tmp/*.tex; do pdflatex "$file"; done')

Maybe you're picking up other files in /tmp that are not .tex files?

[Cpa]

No, the tmp folder only contains files, and your modification still
won't work for me.

By the way I have the same error if I do:

files2compile = os.listdir('./tmp/')
for f in files2compile:
os.system('pdflatex '+f)

--
Cp

[Jerry Hill]

On Wed, Feb 3, 2010 at 12:58 PM, Cpa <cp.as...@gmail.com> wrote:

> Sure.
>
> import sys,re,os
> files2create = sys.argv[1:]
> os.system('mkdir tmp')
>
> # Some code to create the .tex
>
> # Compile tex files
> os.system('for file in tmp/*; do pdflatex "$file"; done')
>
> Pretty simple, alas.

I think your bug is in the lines you chose not to share with us. I
bet you've forgotten to close the last file you create, so that file
has changes that haven't been flushed out to the disk yet. Make sure
you call close() on each of the files when you're done writing them.

--
Jerry

[Charles-Pierre Astolfi]

That was it ! What a stupid error...

Thank you !
--
Cp

On Wed, Feb 3, 2010 at 20:13, Jerry Hill <malac...@gmail.com> wrote:
> On Wed, Feb 3, 2010 at 12:58 PM, Cpa <cp.as...@gmail.com> wrote:

>> Sure.
>>
>> import sys,re,os
>> files2create = sys.argv[1:]
>> os.system('mkdir tmp')
>>
>> # Some code to create the .tex
>>
>> # Compile tex files
>> os.system('for file in tmp/*; do pdflatex "$file"; done')
>>
>> Pretty simple, alas.
>