Re: [Jython-users] File write and read

[Kent J. <ke...@td...>]

Lauri Lehtinen wrote:
> Hi,
> 
> I just noticed this, when I have this kind of code:
> ---
> def copyFile(filename):
>    bi = open(filename)
>    bo = open(filename+'.copy', 'w')
>    b = 1000000
>    while 1:
>        l = bi.read(b)
>        if len(l) == 0:
>            break
>        bo.write(l)
>    bo.close()
>    bi.close()
>    return 1
>           i = raw_input("Give file:")
> copyFile(i)
> ---
> and e.g. copy mp3 file with it the .copy mp3 file is somehow mixed and 
> not working as it should, but when I run this with plain python it works 
> just as it should. How to fix or workaround this? Is thus known bug?

Maybe you need to use binary mode?
    bi = open(filename, 'b')
    bo = open(filename+'.copy', 'wb')

How do the two files differ?

Kent

> 
> I have tried to make the same using java's FileInputStream and 
> FileOutputStream but then the performance is then very bad (about 
> 500kB/s). Is that also known issue?
> 
> Sincerely,
> Lauri Lehtinen
> 
> 
> 
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