Donn wrote: >> How the heck does that make a 400 MB file that fast? It literally takes >> a second or two while every other solution takes at least 2 - 5 minutes. >> Awesome... thanks for the tip!!!
> Because it isn't really writing the zeros. You can make these > files all day long and not run out of disk space, because this > kind of file doesn't take very many blocks. The blocks that > were never written are virtual blocks, inasmuch as read() at > that location will cause the filesystem to return a block of NULs. Under which operating system/file system? As far as I know this should be file system dependent at least under Linux, as the calls to open and seek are served by the file system driver. Jens -- http://mail.python.org/mailman/listinfo/python-list
