python tkinter创建GUI后创建多进程报错

代码如下：

import multiprocessing as mp
from tkinter import *

class Multi_pro:
    def __init__(self,master):
        self.parent = master
        self.parent.geometry('400x400')
        self.bt = Button(self.parent,text='开始子进程',command=self.pro_start)
        self.bt.place(x=5,y=2)
        self.scbar = Scrollbar(self.parent,bd = 30)
        self.scbar.place(x=360,y=25)
        self.lstbx = Listbox(self.parent,height=8,width = 50,yscrollcommand = self.scbar.set)
        self.lstbx.place(x=1,y=25)
        self.lstbx.insert(END,'lalala！')
        self.scbar.config(command = self.lstbx.yview)

    def pro_start(self):
        self.q = mp.Queue()
        self.sunpro1 = mp.Process(target=self.func)
        self.sunpro1.start()
        while True:
            print(self.q.get())

    def func(self):
        sum = 0
        for i in range(100):
            sum+=i
            q.put(sum)


if __name__ == '__main__':
    tk = Tk()
    Multi_pro(tk)
    tk.mainloop()

https://www.cnblogs.com/yy-cola/p/9708925.html