[EMAIL PROTECTED] wrote:
> On Sep 15, 5:24 pm, buffi <[EMAIL PROTECTED]> wrote:
>> On Sep 15, 11:11 pm, "[EMAIL PROTECTED]"
>>
>>
>>
>> <[EMAIL PROTECTED]> wrote:
>>> Hello everyone,
>>> I'm trying to test the tempfile module with the following script,
>>> which basically creates a temporary file, fills the file with some
>>> test data and prints it.
>>> import tempfile
>>> t = tempfile.TemporaryFile()
>>> t.write("lalalala")
>>> t.flush()
>>> print t.read()
>>> Unfortunately, the print statement gives me an empty string. Can
>>> somebody tell me what I'm doing wrong ?
>>> regards Samir
>> Do a t.seek(0) before you do the read to "rewind" the file and then it
>> should work.
>
> Ok, this really worked. Can you elaborate why I have to insert this
> statement?
>
Each file has a "current position". As you write a file the current
position moves to stay just ahead of what's been written. So if you read
it without resetting the current position (back to the beginning with
seek(0)) you will get an immediate end of file (i.e. 0 bytes) returned.
regards
Steve
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