I am trying to do simple multiprocessing with python and Tkinter. But I am receiving error.
Exception in Tkinter callback
...
...
ForkingPickler(file, protocol).dump(obj)
TypeError: cannot pickle '_tkinter.tkapp' object
Program is simple. After run it opens window (startpage) where i click on button which redirects me to experimentPage where i click on button and everything starts
class experimentPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
# start experiment on click
self.button2 = tk.Button(self, text="Ready",
command=self.logic)
self.button2.pack()
def proc1(self):
while True:
print("LOL1")
def proc2(self):
while True:
print("LOL2")
def proc3(self):
while True:
print("LOL3")
def logic(self):
t1 = multiprocessing.Process(target=self.proc1)
t2 = multiprocessing.Process(target=self.proc2)
t3 = multiprocessing.Process(target=self.proc3)
t1.start()
t2.start()
t3.start()
t1.join()
t2.join()
t3.join()
And here is my main
class Main(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
self.attributes('-fullscreen', True)
container.pack(side="top", fill="both", expand = True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in (startPage.startPage, experimentPage.experimentPage):
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(startPage.startPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
app = Main()
app.mainloop()
I just cant make it work. Thanks for any help.
