slicing the end of a string in a list

[Steve Holden]

John Salerno wrote:
> Paul Rubin wrote:
> 
>>John Salerno <johnjsal at NOSPAMgmail.com> writes:
>>
>>>Interesting. So I would say:
>>>
>>>[line.rstrip() for line in open('C:\\switches.txt')]
> 
> 
> 
> How would I manually close a file that's been opened this way? Or is it 
> not possible in this case? Is it necessary?

It's not possible to perform an explicit close if, as in this case, you 
don't have an explicit reference to the file object.

In CPython it's not strictly necessary to close the file, but other 
implementations don't guarantee that a file will be closed after the 
last reference is deleted.

So for fullest portability it's better explicitly close the file.

regards
  Steve
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