import os or import os.path

Mark Hammond skippy.hammond at gmail.com
Wed Sep 7 03:11:55 CEST 2011


On 7/09/2011 7:47 AM, Ian Kelly wrote:
> On Tue, Sep 6, 2011 at 3:25 PM, Jabba Laci<jabba.laci at gmail.com>  wrote:
>> Hi,
>>
>> If I want to use the 'os.path' module, it's enought to import 'os':
>>
>> import os
>> if os.path.isfile('/usr/bin/bash'):
>>     print 'got it'
>>
>> In other source codes I noticed that people write 'import os.path' in
>> this case. Which is better practice?
>
> "import os.path" is better practice.  There is no guarantee in general
> that the os module will automatically import os.path, and in future
> versions or different implementations it might not.

That's probably a matter of opinion - eg, 
http://docs.python.org/tutorial/interpreter.html has an example of 
importing the os module then accessing os.path.

Personally I think directly importing os.path is a waste of precious 
keystrokes ;)

Cheers,

Mark.



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