How to make pulsing progress bar in wxpython when running command? - python-3.x

Question

I'd like to indicate that my program is running and didn't freeze with a pulsing progress bar. The command that would run in the background is this:
os.system('apt install program etc...')
It'll start on button press and I'd like to show a popup progress dialog during the process.
Here's the code of the releated part:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import wx
import threading
import common as g
class myThread (threading.Thread):
def __init__(self, threadID, name):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
def run(self):
print ("Starting " + self.name)
my_thread()
print ("Exiting " + self.name)
class myThread2 (threading.Thread):
def __init__(self, threadID, name):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
def run(self):
print ("Starting " + self.name)
my_thread2()
print ("Exiting " + self.name)
def my_thread():
os.system('apt update')
def my_thread2():
dlg = wx.ProgressDialog('Test', 'Please wait..', style=wx.PD_APP_MODAL | wx.PD_ELAPSED_TIME | wx.PD_CAN_ABORT | wx.STAY_ON_TOP)
test = OtherFrame(title='progres')
counter = 1
while g.th.isAlive():
print('HEEYY')
wx.MilliSleep(300)
dlg.Pulse("Doing computation %d"%counter)
test.Show()
counter += 1
class OtherFrame(wx.Frame):
def __init__(self, title, parent=None):
wx.Frame.__init__(self, parent=parent, title=title, size=(700, 400))
self.Centre()
self.InitUI()
self.Show()
def InitUI(self):
gs = wx.GridSizer(1, 1, 7, 7)
update = wx.Button(self,label = 'Check for system Updates')
gs.Add(update,28,wx.EXPAND)
update.Bind(wx.EVT_BUTTON, self.OnUpdate)
self.SetSizer(gs)
def OnUpdate(self, e):
g.th = myThread(1, "Thread-1")
thread2 = myThread2(2, "Thread-2")
thread2.start()
g.th.start()
g.th.join()
thread2.join()
def main():
app = wx.App()
f1 = OtherFrame(title='frame')
f1.Show()
app.MainLoop()
if __name__ == '__main__':
main()
The text 'HEEYY' appears in the right time on the right place, but the dialog doesn't show up.

Answer 1

You appear to be trying to use 1 thread to determine if the other one is still running.
There is a simpler way, see below:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import wx
import threading
#import common as g
class myThread (threading.Thread):
def __init__(self, threadID, name):
threading.Thread.__init__(self)
self.threadID = threadID
self.name = name
def run(self):
print ("Starting " + self.name)
os.system('apt update')
print ("Exiting " + self.name)
class OtherFrame(wx.Frame):
def __init__(self, title, parent=None):
wx.Frame.__init__(self, parent=parent, title=title, size=(700, 400))
self.Centre()
self.InitUI()
self.Show()
def InitUI(self):
gs = wx.GridSizer(1, 1, 7, 7)
update = wx.Button(self,label = 'Check for system Updates')
gs.Add(update,28,wx.EXPAND)
update.Bind(wx.EVT_BUTTON, self.OnUpdate)
self.SetSizer(gs)
def OnUpdate(self, e):
t1 = myThread(1, "Thread-1")
t1.start()
counter = 0
dlg = wx.ProgressDialog('Test', 'Please wait..', style=wx.PD_APP_MODAL | wx.PD_ELAPSED_TIME | wx.PD_CAN_ABORT | wx.STAY_ON_TOP)
while t1.isAlive():
print('HEEYY')
wx.MilliSleep(300)
dlg.Pulse("Doing computation %d"%counter)
wx.GetApp().Yield()
counter += 1
del dlg
t1.join()
def main():
app = wx.App()
f1 = OtherFrame(title='frame')
f1.Show()
app.MainLoop()
if __name__ == '__main__':
main()