求助：这个总是显示0怎么办啊

mkx1253

1. from tkinter import *
   
2. 
   
3. 
   
4. symbol = ['+', '-', 'x', '/']
   
5. 
   
6. 
   
7. def main(v):
   
8. 
   
9.     root = Tk()
   
10. 
    
11.     frame = Frame(root)
    
12.     frame.pack(padx=10, pady=10)
    
13. 
    
14.     l1 = Label(frame, text=symbol[v - 1])
    
15.     l2 = Label(frame, text='=')
    
16.     l1.grid(row=0, column=1)
    
17.     l2.grid(row=0, column=3)
    
18. 
    
19.     v1 = IntVar()
    
20.     v2 = IntVar()
    
21.     v3 = IntVar()
    
22. 
    
23.     def test(content):
    
24.         return content.isdigit()
    
25. 
    
26.     testCMD = root.register(test)
    
27. 
    
28.     e1 = Entry(frame, textvariable=v1, validate='key', validatecommand=(testCMD, '%P'), width=10)
    
29.     e2 = Entry(frame, textvariable=v2, validate='key', validatecommand=(testCMD, '%P'), width=10)
    
30.     e3 = Entry(frame, textvariable=v3, state='readonly', width=10)
    
31.     e1.grid(row=0, column=0)
    
32.     e2.grid(row=0, column=2)
    
33.     e3.grid(row=0, column=4)
    
34. 
    
35.     def add():
    
36.         result = int(v1.get()) + int(v2.get())
    
37.         v3.set(str(result))
    
38.         print(v1.get())
    
39.         print(v2.get())
    
40.         print(v3.get())
    
41. 
    
42.     def reduce():
    
43.         result = int(v1.get()) - int(v2.get())
    
44.         v3.set(str(result))
    
45. 
    
46.     def multiply():
    
47.         result = int(v1.get()) * int(v2.get())
    
48.         v3.set(str(result))
    
49. 
    
50.     def division():
    
51.         result = int(v1.get()) / int(v2.get())
    
52.         v3.set(str(result))
    
53. 
    
54.     if v == 1:
    
55.         compute = add
    
56.     elif v == 2:
    
57.         compute = reduce
    
58.     elif v == 3:
    
59.         compute = multiply
    
60.     elif v == 4:
    
61.         compute = division
    
62. 
    
63.     b1 = Button(frame, text='确定', command=compute, width=10)
    
64.     b2 = Button(frame, text='退出', command=root.quit, width=10)
    
65.     b1.grid(row=1, column=0, sticky=W, padx=5)
    
66.     b2.grid(row=1, column=4, sticky=E, pady=5)
    
67. 
    
68.     mainloop()
    
69. 
    
70. 
    
71. def start():
    
72.     lap = Tk()
    
73. 
    
74.     def count():
    
75.         q = int(v.get())
    
76.         print(type(q))
    
77.         main(q)
    
78. 
    
79.     frame = LabelFrame(lap, text='请选择计算种类：')
    
80.     frame.pack(padx=15, pady=15)
    
81. 
    
82.     list1 = [('加法计算', 1), ('减法计算', 2), ('乘法计算', 3), ('除法计算', 4)]
    
83.     v = IntVar()
    
84. 
    
85.     for each, num in list1:
    
86.         rb = Radiobutton(frame, text=each, variable=v, value=num, indicatoron=FALSE, command=count)
    
87.         rb.pack(fill=X)
    
88. 
    
89.     mainloop()
    
90. 
    
91. 
    
92. start()

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无论输入什么数，它的v1.get（），v2.get()，和v3.get()都是0

kaohsing

  def add():
        result = int(e1.get()) + int(e2.get())
        e3.insert(0, str(result))
        print(e1.get())
        print(e2.get())
        print(e3.get())

kaohsing

1.     def add():
   
2.         result = int(e1.get()) + int(e2.get())
   
3.         e3["state"]='normal'
   
4.         e3.insert(0, str(result))
   
5.         e3["state"] ='readonly'
   
6.         print(e1.get())
   
7.         print(e2.get())
   
8.         print(e3.get())

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