How to run PyOS_InputHook from python code (i.e. yield to event loops)

[Ville M. Vainio]

Background: PyOS_InputHook is something that gets run when python is
doing raw_input. TkInter and friends use it to run their event loops,
so that their events are handled while python is doing raw_input.

What I'd like to do is run the same function without having to do
raw_input. I.e. I'd like to run whatever event loop is available,
without incorporating any gui-specific code (PyOS_InputHook seems like
a nifty way to accomplish this).

My actual use case is to keep a tkinter application responsive while
launching a background process (and waiting for it to complete!).

My eventual code would be something like:

launch_process_ in_thread('bzr pull')

while not is_done:
pyos_inputhook( )
time.sleep(0.1)

print "Done!"

[Sean DiZazzo]

Re: How to run PyOS_InputHook from python code (i.e. yield to eventloops)

On Sep 6, 1:00 pm, vivai...@gmail. com (Ville M. Vainio) wrote:

Background: PyOS_InputHook is something that gets run when python is
doing raw_input. TkInter and friends use it to run their event loops,
so that their events are handled while python is doing raw_input.
>
What I'd like to do is run the same function without having to do
raw_input. I.e. I'd like to run whatever event loop is available,
without incorporating any gui-specific code (PyOS_InputHook seems like
a nifty way to accomplish this).
>
My actual use case is to keep a tkinter application responsive while
launching a background process (and waiting for it to complete!).
>
My eventual code would be something like:
>
launch_process_ in_thread('bzr pull')
>
while not is_done:
  pyos_inputhook( )
  time.sleep(0.1)
>
print "Done!"

I'm still recovering from a hangover, so don't quote me. I think you
want the "after" function:

launch_process_ in_thread('bzr pull')
self.update()

def update(self):
while not self.is_done:
self.after(2000 , self.update)

[ville]

Re: How to run PyOS_InputHook from python code (i.e. yield to event loops)

Sean DiZazzo <half.italian@g mail.comwrites:

>My eventual code would be something like:
>>
>launch_process _in_thread('bzr pull')
>>
>while not is_done:
>  pyos_inputhook( )
>  time.sleep(0.1)
>>
>print "Done!"

>
I'm still recovering from a hangover, so don't quote me. I think you
want the "after" function:
>
launch_process_ in_thread('bzr pull')
self.update()
>
def update(self):
while not self.is_done:
self.after(2000 , self.update)

That's tk-specific, right? I'm looking for a snippet that

- Would not be tied to tk

- Would run sequentially, i.e. the next command would not be entered
before the process has finished. Just like os.system()

[Fredrik Lundh]

Re: How to run PyOS_InputHook from python code (i.e. yield to eventloops)

ville wrote:

That's tk-specific, right? I'm looking for a snippet that
>
- Would not be tied to tk

upstream, you said:

"My actual use case is to keep a tkinter application responsive"

</F>