Setting an exclusive lock on a file

Diez B. Roggisch deets at nospam.web.de
Sun Mar 29 08:39:29 EDT 2009


Eugene Perederey schrieb:
> Hi all,
> I want to set an exclusive lock on a file so other processes wouldn't
> be able to write to it.
> So I write
> 
> import fcntl
> fd=open('myfile','w')
> fcntl.lockf(fd, fcntl.LOCK_EX)
> fd.write('some bytes')
> fd.close()
> 
> But it turns out that my script doesn't write anything to file whereas
> other processes do. What's wrong in my code?

http://code.activestate.com/recipes/65203/

Diez



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