Can I set up a timed callback without Tkinter or twisted or something?

[Hendrik van Rooyen]

Hi,

I want to do the equivalent of the after thingy in tkinter - setting up in
effect a timed call back.

My use case is as a "supervisory" timer - I want to set up an alarm, which I
want to cancel if the expected occurrence occurs - but its not a GUI app.

My googling gets a lot of stuff pointing to optparse...

Does the standard lib have anything like this?

- Hendrik

[Scott David Daniels]

Hendrik van Rooyen wrote:

I want to do the equivalent of the after thingy in tkinter - setting up in
effect a timed call back.

My use case is as a "supervisory" timer - I want to set up an alarm, which I
want to cancel if the expected occurrence occurs - but its not a GUI app.

Use a thread that uses something like:
def action():
sleep(50)
if not canceled:
callback(foo)
as its action.

The callback ill be in another thread, but .... Look up threading for
more details.
--Scott David Daniels
sc***********@acm.org

[hg]

Hendrik van Rooyen wrote:

Hi,

I want to do the equivalent of the after thingy in tkinter - setting up in
effect a timed call back.

My use case is as a "supervisory" timer - I want to set up an alarm, which I
want to cancel if the expected occurrence occurs - but its not a GUI app.

My googling gets a lot of stuff pointing to optparse...

Does the standard lib have anything like this?

- Hendrik

http://python.active-venture.com/lib/timer-objects.html

[Hendrik van Rooyen]

"Scott David Daniels" <sc***********@acm.orgwrote:

Hendrik van Rooyen wrote:

I want to do the equivalent of the after thingy in tkinter - setting up in
effect a timed call back.

My use case is as a "supervisory" timer - I want to set up an alarm, which I
want to cancel if the expected occurrence occurs - but its not a GUI app.

Use a thread that uses something like:
def action():
sleep(50)
if not canceled:
callback(foo)
as its action.

The callback ill be in another thread, but .... Look up threading for
more details.

Thanks - I was hoping that I did not have to do it myself - the Tkinter thingy
works nicely - I was hoping that the interpreter could handle something like
this... What I don't like too much about the sleep based solution is that yer
blind and deaf while sleeping - at least in that thread - and I am trying for
fairly fine grained timing resolution...

is there not something based on signals? - I seem to recall some such thing
here in another thread.. ( I am running Linux)

-Hendrik

[Hendrik van Rooyen]

"hg" <[e-mail]:

Hendrik van Rooyen wrote:

Hi,

I want to do the equivalent of the after thingy in tkinter - setting up in
effect a timed call back.

My use case is as a "supervisory" timer - I want to set up an alarm, which I
want to cancel if the expected occurrence occurs - but its not a GUI app.

My googling gets a lot of stuff pointing to optparse...

Does the standard lib have anything like this?

- Hendrik

http://python.active-venture.com/lib/timer-objects.html

Thanks - will check it out - Hendrik

[skip]

Hendrikis there not something based on signals? - I seem to recall
Hendriksome such thing here in another thread.. ( I am running Linux)

Have you tried:

import signal
help(signal)

at the interpreter prompt?

Skip

[Hendrik van Rooyen]

<sk**@pobox.comwrote:

>
Hendrikis there not something based on signals? - I seem to recall
Hendriksome such thing here in another thread.. ( I am running Linux)

Have you tried:

import signal
help(signal)

at the interpreter prompt?

Skip

*blush* - actually, no - I was looking for signals...

- Hendrik