wxasync

asyncio support for wxpython

This library defines two things: WxAsyncApp, and AsyncBind. Just create a WxAsyncApp instead of a wx.App, and use AsyncBind when you want to bind an event to a coroutine. You then start the application using loop.run_until_complete(app.MainLoop()).

Below is a simple example:

import wx
from wxasync import AsyncBind, WxAsyncApp
import asyncio
from asyncio.events import get_event_loop


class TestFrame(wx.Frame):
    def __init__(self, parent=None):
        super(TestFrame, self).__init__(parent)
        vbox = wx.BoxSizer(wx.VERTICAL)
        button1 =  wx.Button(self, label="Submit")
        self.edit =  wx.StaticText(self, style=wx.ALIGN_CENTRE_HORIZONTAL|wx.ST_NO_AUTORESIZE)
        vbox.Add(button1, 2, wx.EXPAND|wx.ALL)
        vbox.AddStretchSpacer(1)
        vbox.Add(self.edit, 1, wx.EXPAND|wx.ALL)
        self.SetSizer(vbox)
        self.Layout()
        AsyncBind(wx.EVT_BUTTON, self.async_callback, button1)

    async def async_callback(self, event):
        self.edit.SetLabel("Button clicked")
        await asyncio.sleep(1)
        self.edit.SetLabel("Working")
        await asyncio.sleep(1)
        self.edit.SetLabel("Completed")


app = WxAsyncApp()
frame = TestFrame()
frame.Show()
app.SetTopWindow(frame)
loop = get_event_loop()
loop.run_until_complete(app.MainLoop())

Performance

wxasync does GUI message polling every 5ms, and runs the asyncio message loop the rest of the time. This gives pretty good results

Below is view of the performances (on windows Core I7-7700K 4.2Ghz):

Scenario	Latency	Latency (max throughput)	Throughput(msg/s)
asyncio only (for reference)	0ms	17ms	571 325
wx only (for reference)	0ms	19ms	94 591
wxasync (GUI)	5ms	19ms	52 304
wxasync (GUI+asyncio)	5ms GUI / 0ms asyncio	24ms GUI / 12ms asyncio	40 302 GUI + 134 000 asyncio

The performance tests are included in the 'test' directory.

BrendanSimon/wxasync

wxasync

Performance