Re: [Jython-users] Creating an n byte file efficiently

[Jesse M. <j.L...@gm...>]

Correct me if I'm wrong, but in this case, isn't the entire string is
stored in memory?

On Jan 17, 2008 11:46 AM, Gert-Jan <jy...@gj...> wrote:
> You can also use a 'python only' version
>
> filOutput = file('textfile', 'w')
> filOutput.write('a'*10*1024*1024)
> filOutput.close()
>
> This file is filled with 'a's and 10MB. (Using a single-byte
> codepage/encoding)
>
>
>
> Jeff Emanuel schreef:
>
> > This works pretty fast, but it fills the file with zeros,
> > not text.
> >
> >   >>> import java
> >   >>> raf=java.io.RandomAccessFile("path_to_file","rw")
> >   >>> raf.setLength(1024*1024*10)
> >   >>> raf.close()
> >
> >
> > Jesse Millan wrote:
> >> All,
> >>
> >> I'm looking for an efficient way to create a large dummy file in
> >> jython. It'll need to be created and filled with about 10 MB of
> >> (arbitrary - preferably text) data all at once. Obviously using a for
> >> loop and calling PyFile.write("a") ten million times is a bad idea
> >> memory wise... any suggestions?
> >>
> >> Thanks!
> >>
> >> -Jesse
> >>
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