[Tutor] os.system

[wesley chun]

On Fri, Dec 17, 2010 at 4:17 PM, Emile van Sebille <emile at fenx.com> wrote:
> On 12/17/2010 4:07 PM jtl999 said...
>>
>> I want to pass a variable to os.system which is dir
>>>>> dir=raw_input ("Dir Please ")
>>>>> os.system ("ls"  + dir)
>> sh: ls/: No such file or directory
>
> this has concatenated "ls" and dir
> try with "ls "

in addition to emile's obvious suggestion, i have a few minor ones:

1) don't use a built-in function as a variable name (dir)
2) os.system() only sends off the request. if the cmd has output, you
get it too. you can't capture it like you can with os.popen*()
3) you should consider using subprocess... it obsoletes all the os.*() functions

cheers,
-- wesley
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"Python Fundamentals", Prentice Hall, (c)2009
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wesley.j.chun :: wescpy-at-gmail.com
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