[Tutor] Re: tempfile

[Liam Clarke]

fileObj=...

fileObj.seek()? Is what I use, although that's for specific byte
positions I believe.


On Fri, 24 Dec 2004 03:09:31 +0430, Lee Harr <missive at hotmail.com> wrote:
> >I'm using tempfile.  The doc says it is opened 'w+b' so that it can be
> >read and written without closing and reopening.
> >
> >But, for the life of me, I can't find any way to rewind it so I can
> >read what I wrote.
> >
> 
> >>>import tempfile
> >>>import os
> >>>fd, name = tempfile.mkstemp()
> >>>os.write(fd, 'foo')
> 3
> >>>os.lseek(fd, 0, 0)
> 0L
> >>>os.read(fd, 10)
> 'foo'
> 
> 
> >tempfile.mkstemp gives me the file descriptor.  Is there a way to make
> >a file object from a file descriptor?
> >
> 
> Not that I can see:
> http://docs.python.org/lib/os-fd-ops.html
> 
> ... except maybe this, which is not quite the same:
> 
> >>>import tempfile
> >>>import os
> >>>fd, name = tempfile.mkstemp()
> >>>os.write(fd, 'foo')
> 3
> >>>f = open(name)
> >>>f.read()
> 'foo'
> 
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