python里tkinter做24点。点击按钮后，不是程序无响应，就是一点反应都没有。希望有人指出错误

代码如下：

from tkinter import *
import itertools
import threading
import tkinter as tk

root = tk.Tk()
root.title('24点')
root.geometry("600x400")

tk.Label(root,text='请输入您的数字1:').place(x=120,y=1)
tk.Label(root,text='请输入您的数字2:').place(x=120,y=22)
tk.Label(root,text='请输入您的数字3:').place(x=120,y=42)
tk.Label(root,text='请输入您的数字4:').place(x=120,y=62)

b1 = tk.IntVar()
b2 = tk.IntVar()
b3 = tk.IntVar()
b4 = tk.IntVar()

p1 = tk.Entry(root,textvariable=b1)
p1.pack()
p2 = tk.Entry(root,textvariable=b2)
p2.pack()
p3 = tk.Entry(root,textvariable=b3)
p3.pack()
p4 = tk.Entry(root,textvariable=b4)
p4.pack()

c1 = b1.get()
c2 = b2.get()
c3 = b3.get()
c4 = b4.get()

def thread_it(func, *args):
  t = threading.Thread(target=func, args=args)
  t.setDaemon(True)
  t.start()

def do():
    while True:
        try:
            n1 = int(c1)
            n2 = int(c3)
            n3 = int(c3)
            n4 = int(c4)
            pokers = (n1, n2, n3, n4)
            ans = set()
            count = 0
            for nums in itertools.permutations(pokers):
                for oper in itertools.product("+-*/", repeat=3):
                    mode1 = " (({0} {4} {1}) {5} {2} ) {6} {3} ".format(*nums, *oper);
                    mode2 = " ({0} {4} ({1} {5} {2})) {6} {3} ".format(*nums, *oper);
                    mode3 = " {0} {4} ({1} {5} ({2} {6} {3}))".format(*nums, *oper);
                    mode4 = " {0} {4} (({1} {5} {2} ) {6} {3})".format(*nums, *oper);
                    mode5 = " ({0} {4} {1}) {5} ({2} {6} {3})".format(*nums, *oper);
                    for express in [mode1, mode2, mode3, mode4, mode5]:
                        ans.add(express)
            for oper in ans:
                try:
                    if abs(eval(oper) - 24) <= 0.0001:
                        count = count + 1
                        print(" 第%04d的解法 %s=24" % (count, oper))
                except:
                    continue
        except EOFError:
            break
button = Button(root,text='计算',height=3,width=15,command=lambda :thread_it(do))
button.pack()

root.mainloop()

改为这样按按钮没有反应

import itertools
import tkinter as tk
from tkinter import *

root = tk.Tk()
root.title('24点')
root.geometry("600x400")

tk.Label(root,text='请输入您的数字1:').place(x=120,y=1)
tk.Label(root,text='请输入您的数字2:').place(x=120,y=22)
tk.Label(root,text='请输入您的数字3:').place(x=120,y=42)
tk.Label(root,text='请输入您的数字4:').place(x=120,y=62)

b1 = tk.StringVar()
b2 = tk.StringVar()
b3 = tk.StringVar()
b4 = tk.StringVar()

p1 = tk.Entry(root,textvariable=b1)
p1.pack()
p2 = tk.Entry(root,textvariable=b2)
p2.pack()
p3 = tk.Entry(root,textvariable=b3)
p3.pack()
p4 = tk.Entry(root,textvariable=b4)
p4.pack()

c1 = b1.get()
c2 = b2.get()
c3 = b3.get()
c4 = b4.get()

def do():
    try:

        pokers = (c1, c2, c3, c4)
        ans = set()
        count = 0
        for nums in itertools.permutations(pokers):
            for oper in itertools.product("+-*/", repeat=3):
                mode1 = " (({0} {4} {1}) {5} {2} ) {6} {3} ".format(*nums, *oper);
                mode2 = " ({0} {4} ({1} {5} {2})) {6} {3} ".format(*nums, *oper);
                mode3 = " {0} {4} ({1} {5} ({2} {6} {3}))".format(*nums, *oper);
                mode4 = " {0} {4} (({1} {5} {2} ) {6} {3})".format(*nums, *oper);
                mode5 = " ({0} {4} {1}) {5} ({2} {6} {3})".format(*nums, *oper);
                for express in [mode1, mode2, mode3, mode4, mode5]:
                    ans.add(express)
        for oper in ans:
            try:
                if abs(eval(oper) - 24) <= 0.0001:
                    count = count + 1
                    print(" 第%04d的解法 %s=24" % (count, oper))
            except:
                continue
    except EOFError:
        return

button = Button(root,text='计算',height=3,width=15,command=do)
button.pack()
root.mainloop()

threading和whileTrue这样的语句不建议在tkinter里面使用，因为很容易卡死了，并且还无法发现出现了什么问题。还有就是Entry里面即便你输入了数字，程序也应该会认为你输入的是字符串，所以应该把上面的IntVar改成StringVar

哈哈，我也写了一个24点游戏，不过我是用的pyqt5，已经做完了，个人觉得还不错，有兴趣的话，可以交流一下。
24pointgame.zip-其他文档类资源-CSDN下载 24点游戏可执行文件，源代码私聊更多下载资源、学习资料请访问CSDN下载频道. https://download.csdn.net/download/weixin_47411110/21462022
可以试试