Hi.

Can anyone tell me the python code for a simple countdown from eg. 2.00 minutes.

It should be printet out to the screen.
When it is finished it should write "Time is up"

Hope you can help.

Henrik

Do you have something already written so we can see where the problem is or are you just curious?

__________________
Start Programming with Python-A beginner's guide to programming and the Python language.
-------------
Common Sense v2.0-Striving to make the world a little bit smarter.

Hi. In the meanwhile i have recieved this code:
--------------------
import time
def countdown(secs, interval=1):
while secs > 0:
yield secs
secs = secs - 1
time.sleep(interval)


print 'Tæller ned fra 120 sekunder:'
for count in countdown(120):
print count
---------------------
AND this code:
--------------------
import time
start = time.time()
lastprinted = 0
finish = start + 120
while time.time() < finish:
now = int(time.time ())
if now != lastprinted:
print int(finish - now)
lastprinted = now
time.sleep(0.5) # this stops the system hanging whilst this is running

print "Time is up"
-------------------

They do exactly the same ...

Is it possible that it writes:
1.59
1.58
1.57
...
1.39
....
3
2
1
0
TIME IS UP

And about the sleep function - i have some other stuff running - but the sleep functions of course stop all the other functions - how can i avoid that?

Thanks for now ;-)

Here's some info on the time.sleep() function: http://www.faqts.com/knowledge_base/view.phtml/aid/2609. Not sure if it will answer your question though. The actual Python doc for time() is http://python.org/doc/current/lib/module-time.html.

__________________
Start Programming with Python-A beginner's guide to programming and the Python language.
-------------
Common Sense v2.0-Striving to make the world a little bit smarter.

Disclaimer: I am not a "python guy", and what I am about to post may not be the "best" way to do it in python. I wouldn't be shocked to find that there are people who could show more elegant, python-esque, ways to do this, but the following works for me. I am one of those funny guys who generally approach number problems from a mathematical/arithmetical point of view.

Given a variable t that represents time in seconds, as in one of your countdown scripts, I use integer arithmetic to separate out the number of minutes and seconds. Then I print the number of seconds as a 2-digit decimal number where 1 sec is printed .01, 2 sec is printed .02, etc

I show two ways to calculate the number of remainder seconds (I commented out one of the ways --- if you are interested, you can try that one and see if the results make sense). Some people like one way, some like the other.




Try it, and let me know if it works for you. If anyone has a better way, I'd like to learn a little python myself.

Regards,

Dave

Footnote: If you want "US-style" printouts where minutes and seconds are denoted mm:ss instead of mm.ss, you could try the following in place of the first print statement above:

[edit]
As I look at this, I realize that the first print statement above could have been:

The point being that, once you have separated the minutes and remainder seconds, you can combine them in an output format any way you want.
[/edit]

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