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

[Gert-Jan <jy...@gj...>]

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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