On Jul 26, 10:02 pm, alex23 <[EMAIL PROTECTED]> wrote:
> Ugh, and in pointing our your inaccurate code I posted my own:
>
> > >>> f = open('dummy.txt','w')
> > >>> f.write(line = 'this doesn't work')
>
> > File "<stdin>", line 1
> > f.write(line = 'this doesn't work')
> > ^
> > SyntaxError: invalid syntax
>
> That should be:
>
> >>> f.write(line = "this doesn't work")
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> TypeError: write() takes no keyword arguments
>
> Sorry about that :)
This is close.
import os
size= os.path.getsize( 'test line_insertion.txt' )
f= open( 'test line_insertion.txt', 'r+' )
linelen= len( f.readline( ) )
f.seek( 20, os.SEEK_SET )
while f.tell( )< size:
f.write( 'y' )
f.seek( linelen, os.SEEK_CUR )
f.flush( )
f.close( )
It assumes lines are a constant length (big assumption), and skips one
line's length of characters starting from the 20th character. It
repeats until current file position is past the original length of the
file.
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