Trio guest mode wrapper for PyGTK
Project description
trio-gtk
Trio guest mode wrapper for PyGTK
Using the Trio guest mode feature, we can run both the Trio and PyGTK event loops alongside each other in a single program. This allows us to make use of the Trio library and the usual async
/await
syntax and not have to directly manage thread pools.
This library provides a thin wrapper for initialising the guest mode and exposes a single public API function, trio_gtk.run
into which you can pass your Trio main function. This function must accept a nursery
argument which can spawn child tasks for the duration of the host loop.
Install
$ pip install trio-gtk
Example
import gi
import trio
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk as gtk
import trio_gtk
class Example(gtk.Window):
def __init__(self, nursery):
gtk.Window.__init__(self, title="Example")
self.button = gtk.Button(label="Create a task")
self.button.connect("clicked", self.on_click)
self.add(self.button)
self.counter = 0
self.nursery = nursery
self.connect("destroy", gtk.main_quit)
self.show_all()
def on_click(self, widget):
self.counter += 1
self.nursery.start_soon(self.say_hi, self.counter)
async def say_hi(self, count):
while True:
await trio.sleep(1)
print(f"hi from task {count}")
async def main(nursery):
Example(nursery)
trio_gtk.run(main)
Project details
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