Python GUI编程（TKinter）（简易计算器）

搞课设搞得心累，现在看到人脸这两个字就烦躁，无聊搞搞tkinter，实现一个计算器的功能，能够简单的加减乘除。

简单的页面如下：

简单的代码如下：

 # encoding:utf-8
 import tkinter as tk

 root = tk.Tk()
 root.title("Small Calculator")
 root.geometry('500x300')

 var1 = tk.DoubleVar()
 label1 = tk.Label(text="The First Number", width=20, height=2)
 label1.pack()
 entry1 = tk.Entry(width=20)
 entry1.pack()

 var2 = tk.StringVar()
 label2 = tk.Label(text="The Operator", width=20, height=2)
 label2.pack()
 entry2 = tk.Entry(width=20)
 entry2.pack()

 var3 = tk.DoubleVar()
 label3 = tk.Label(text="The Second Number", width=20, height=2)
 label3.pack()
 entry3 = tk.Entry(width=20)
 entry3.pack()

 var4 = tk.DoubleVar()
 label4 = tk.Label(text="The Solution", width=20, height=2)
 label4.pack()
 label5 = tk.Label(textvar=var4, width=30, height=1,)
 label5.pack()

 def clickFun():
     global var1
     global var2
     global var3
     global var4
     va11 = int(entry1.get())
     var2 = entry2.get()
     var3 = int(entry3.get())
     if var2 == '+':
         var4.set(int(va11+var3))
     elif var2 == '-':
         var4.set(int(va11-var3))
     elif var2 == '*':
         var4.set(int(va11*var3))
     elif var2 == '/':
         if var3 == 0:
             var4.set("请重新输入数据")
         else:
             var4.set(int(va11/var3))
     else:
         var4.set("运算符出错，请重新输入数据")

 button1 = tk.Button(text="Deal" ,width=10, height=2, command=clickFun)
 button1.pack()
 root.mainloop()