os.system question

2007-12-28 Thread stanleyxu 
Hi All,

I am porting Perl script to Python script. Everything works fines until 
calling os.system().

In my script, a number of DOS-commands will be executed.
   for new_folder, old_folder in folder_array:
   os.system('MD "' + new_folder + '"');
   os.system('XCOPY "' + old_folder + '" "' + new_folder + '"');

In Perl, all outputs will be printed in console directly.
But in Python, outputs will be printed in separated cmd-windows.

Is it possible to prevent so many cmd-windows to be opened and let all 
output be printed direct in Python shell?


best regards ^^)
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Re: os.system question

2007-12-28 Thread stanleyxu 
To note this problem occurs when debugging script in IDLE editor.
When I double click on my_script.py, all outputs will be printed in one 
console.

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Re: os.system question

2007-12-28 Thread stanleyxu 
[EMAIL PROTECTED] wrote:
> On Dec 28, 12:57 pm, stanleyxu <[EMAIL PROTECTED]> wrote:
>> To note this problem occurs when debugging script in IDLE editor.
>> When I double click on my_script.py, all outputs will be printed in one
>> console.
>>
>> --
>> ___
>>oo  // \\
>>   (_,\/ \_/ \ Xu, Qian
>> \ \_/_\_/>  stanleyxu2005
>> /_/   \_\
> 
> 
> Why are you using os.system for these commands in the first place? You
> should be using the os and shutil modules instead as they would be
> more cross-platform friendly.
> 
> Something like this:
> 
> # untested
> for new_folder, old_folder in folder_array:
>os.mkdir(new_folder)
>shutil.copytree(old_folder, new_folder)
> 
> 
> Adjust the path as needed in the mkdir call.
> 
> See shutil's docs for more info:
> http://docs.python.org/lib/module-shutil.html
> 
> And here's some folder manipulation docs:
> http://effbot.org/librarybook/os.htm
> 
> By the by, the subprocess module is supposed to be used in place of
> the os.system and os.popen* calls: 
> http://docs.python.org/lib/module-subprocess.html
> 
> Mike

Thanks Mike,

you have provided another option.

But my question has not been answered yet. The reason, why I use 
os.system(), is that I want to avoid accident file deletion by writing a 
script. My real script looks like:

# 1. Funtion to execute a command in DOS-console
def execCommand(cmd):
 if DEBUG_MODE:
 print 'DOS> ' + cmd;
 else:
 os.system(cmd);

# 2.1 Creates temp folder. Removes it first, if it exists.
if os.path.exists(tmp_folder):
 execCommand('RD "' + tmp_folder + '" /S /Q');
execCommand('MD "' + tmp_folder + '"');

# 2.2 Copies all files to the temp folder, that are going to be put in 
package.
for source_folder, dest_folder in folders_array:
 if not os.path.exists(dest_folder):
 execCommand('MD "' + dest_folder + '"');
 execCommand('XCOPY \"' + source_folder + '" "' + dest_folder + '" /Y');


The benefit is that, when I set DEBUG_MODE=True, I can see what will be 
executed. So that I can make sure that my script will not delete any 
other important files by accident.

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Re: os.system question

2007-12-28 Thread stanleyxu 
Thanks again for your kindly tips.

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Re: os.system question

2007-12-28 Thread stanleyxu 
> 
> import subprocess
> 
> output = subprocess.Popen('MD "' + new_folder + '"', shell=True,
> stdout=subprocess.PIPE, stderr=subprocess.STDOUT).communicate()[0]
> print output
> 
> 
> Carl Banks

Thanks Carl, it works ^^)

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