On 2010-01-25, Hans Mulder <han...@xs4all.nl> wrote:
> Grant Edwards wrote:
>> On 2010-01-24, R?mi <babedo...@yahoo.fr> wrote:
>>
>>> I would like to do a Python application that prints data to stdout, but
>>> not the common way. I do not want the lines to be printed after each
>>> other, but the old lines to be replaced with the new ones, like wget
>>> does it for example (when downloading a file you can see the percentage
>>> increasing on a same line).
>>
>> sys.stdout.write("Here's the first line")
>> time.sleep(1)
>> sys.stdout.write("\rAnd this line replaces it.")
>
> That does not work on my system, because sys.stdout is line buffered.
That's correct of course.
> This causes both strings to be written when sys.stdout is closed because
> Python is shutting down.
>
> This works better:
>
> import sys, time
>
> sys.stdout.write("Here's the first line")
> sys.stdout.flush()
> time.sleep(1)
> sys.stdout.write("\rAnd this line replaces it.")
> sys.stdout.flush()
Or you can tell Python to do unbuffered output:
#!/usr/bin/python -u
--
Grant Edwards grante Yow! I'm using my X-RAY
at VISION to obtain a rare
visi.com glimpse of the INNER
WORKINGS of this POTATO!!
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