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From: Carlos Nepomuceno <carlosnepomuceno@outlook.com>
To: "python-list@python.org" <python-list@python.org>
Subject: RE: How to write fast into a file in python?
Date: Fri, 17 May 2013 21:33:23 +0300
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Xref: csiph.com comp.lang.python:45483

Think the following update will make the code more portable:=0A=
=0A=
x +=3D len(line)+len(os.linesep)-1=0A=
=0A=
Not sure if it's the fastest way to achieve that. :/=0A=
=0A=
> On Fri=2C 17 May 2013 18:20:33 +0300=2C Carlos Nepomuceno wrote:=0A=
>=0A=
>> ### fastwrite5.py ###=0A=
>> import cStringIO=0A=
>> size =3D 50*1024*1024=0A=
>> value =3D 0=0A=
>> filename =3D 'fastwrite5.dat'=0A=
>> x =3D 0=0A=
>> b =3D cStringIO.StringIO()=0A=
>> while x < size:=0A=
>>     line =3D '{0}\n'.format(value)=0A=
>>     b.write(line)=0A=
>>     value +=3D 1=0A=
>>     x +=3D len(line)+1=0A=
>=0A=
> Oh=2C I forgot to mention: you have a bug in this function. You're alread=
y=0A=
> including the newline in the len(line)=2C so there is no need to add one.=
=0A=
> The result is that you only generate 44MB instead of 50MB. 		 	   		  =