[Tutor] Any Tutor there ? Removing redundant parameters in a models file having include files.

[Karim Liateni]

Lie Ryan wrote:
> On 03/01/10 01:12, Alan Gauld wrote:
>   
>>> def getLines(file):
>>>   """Get the content of a file in a lines list form."""
>>>   f = open(file, 'r')
>>>   lines = f.readlines()
>>>   f.close()
>>>   return lines
>>>       
>> I'm not sure these functions add enough value to ghave them. I';d
>> probably just use
>>
>> try: open(outfile,'w').writelines(lines)
>> except IOError: #handle error
>>
>> try: lines = open(filename).readlines()
>> except IOError: #handle error
>>
>> The close will be done automatically since you don't hold a reference to
>> the file
>>     
>
> Remember why we have the new with-block? It's precisely because files
> will be automagically closed only if we're running on CPython; Python
> the language and thus alternative implementations doesn't guarantee
> automatic closing. I'd agree with the function having minimal utility
> value though:
>
> with open(file) as f:
>     lines = f.readlines()
>     # f.close() will be called by the context manager
>
> and if you're just copying to another file:
>
> from contextlib import nested
> with nested(open(infile), open(outfile, 'w')) as (fin, fout):
>     fout.write(fin.read())
>
> or even better, as Alan suggested, using shutil.copyfile().
>
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>   
Thank you Lie but I have a restriction on the python version I must use 
v2.2.
This feature is available only on later version 2.5 I believe.

Regards
Karim

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