How to create a timer/scheduler in Python?

I need what I'd call (in .Net) a timer, ie I need to run a function eg
every 2 seconds - it doesn't need to be millisec accurate but it would
be nice if it wasn't eg every 4 seconds or something.
>
Rather surprisingly, Core Python (Chun) doesn't seem to index 'timer'
or 'scheduler', which leaves me wondering whether this is an aspect of
Python that isn't perhaps widely used?
>
Looking around on the net I can see references to a thread timer, but
I'm not really looking to start any new threads (I just want part of
the GUI to update every 2 secs) and don't want to get into that sort
of complication while still just learning Python.
>
Is there really no simple timer/scheduler function available in
Python?

Looking around on the net I can see references to a thread timer, but
I'm not really looking to start any new threads (I just want part of
the GUI to update every 2 secs) and don't want to get into that sort
of complication while still just learning Python.

Is there really no simple timer/scheduler function available in
Python?

every 2 seconds - it doesn't need to be millisec accurate but it would
be nice if it wasn't eg every 4 seconds or something.
>
Rather surprisingly, Core Python (Chun) doesn't seem to index 'timer'
or 'scheduler', which leaves me wondering whether this is an aspect of
Python that isn't perhaps widely used?
>
Looking around on the net I can see references to a thread timer, but
I'm not really looking to start any new threads (I just want part of
the GUI to update every 2 secs) and don't want to get into that sort
of complication while still just learning Python.
>
Is there really no simple timer/scheduler function available in
Python?

I need what I'd call (in .Net) a timer, ie I need to run a function eg
every 2 seconds - it doesn't need to be millisec accurate but it would
be nice if it wasn't eg every 4 seconds or something.
>
Rather surprisingly, Core Python (Chun) doesn't seem to index 'timer'
or 'scheduler', which leaves me wondering whether this is an aspect of
Python that isn't perhaps widely used?
>
Looking around on the net I can see references to a thread timer, but
I'm not really looking to start any new threads (I just want part of
the GUI to update every 2 secs) and don't want to get into that sort
of complication while still just learning Python.
>
Is there really no simple timer/scheduler function available in
Python?