read() on tempfile

[cherico]

from tempfile import *

f = NamedTemporaryF ile ()
f = write ( 'test' )
print f.read () #here print nothing

why is it nothing to read()?
I suppose f is of mode 'w+'

[Sidharth Kuruvila]

Re: read() on tempfile


"cherico" <cherico@bonbon .net> wrote in message
news:afc115ec.0 401291041.155b5 1ee@posting.goo gle.com...[color=blue]
> from tempfile import *
>
> f = NamedTemporaryF ile ()
> f = write ( 'test' )
> print f.read () #here print nothing
>
> why is it nothing to read()?
> I suppose f is of mode 'w+'[/color]

the rpoblem is probably that your file pointer is sitting at the end of the
file after you write something
try f.seek(0) before you read, might work

[Gerrit Holl]

Re: read() on tempfile

cherico wrote:[color=blue]
> from tempfile import *
>
> f = NamedTemporaryF ile ()
> f = write ( 'test' )
> print f.read () #here print nothing[/color]

Strange, it should raise an Exception.
I guess you typed it over?

'write' should give a NameError. You want to do f.write, not f=write.
After that, you first want to seek to 0.

Gerrit.

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