求助：为啥会报错

2019721

1. import tkinter as tk
   
2. import crcmod.predefined
   
3. 
   
4. 
   
5. def get_data():
   
6.     try:
   
7.         calc()
   
8.     except ValueError:
   
9.         root1 = tk.Tk()
   
10.         root1.title("提示")
    
11.         label2 = tk.Label(root1, text="请输入正确的十六进制数据\n例如a->0a")
    
12.         label2.pack()
    
13.         button3 = tk.Button(root1, text="确定", command=root1.destroy)
    
14.         button3.pack()
    
15.         return False
    
16. 
    
17. 
    
18. def calc():
    
19.     arr = entry1.get()
    
20.     print("计算输入框内的值得校验和")
    
21.     crc8 = crcmod.predefined.Crc('crc-8')
    
22.     crc8.update(bytes().fromhex(arr))
    
23.     data = hex(crc8.crcValue)
    
24.     print(data)
    
25.     v.set(data)
    
26.     return True
    
27. 
    
28. 
    
29. def clean():
    
30.     print("清除输入框内及生成的校验和")
    
31.     entry1.delete(0, 'end')
    
32.     entry2.delete(0, 'end')
    
33. 
    
34. 
    
35. root = tk.Tk()
    
36. root.title("CRC校验和工具")
    
37. root.geometry('550x150')
    
38. 
    
39. label1 = tk.Label(root, text="请输入需要校验的数据：").grid(row=0, sticky='w', padx=10, pady=5)
    
40. 
    
41. entry1 = tk.Entry(root)
    
42. entry1.place(x=10, y=30, width=500, height=35)
    
43. entry1.insert(0, "默认文本...")
    
44. 
    
45. v = tk.StringVar()
    
46. testCMD = root.register(get_data)
    
47. entry2 = tk.Entry(root, textvariable=v, validate='all', validatecommand=(testCMD, '%P'))
    
48. entry2.place(x=75, y=95,  width=50)
    
49. 
    
50. button1 = tk.Button(root, text="计算", command=get_data).place(x=10, y=90)
    
51. 
    
52. button2 = tk.Button(root, text="清除", command=clean).place(x=200, y=90)
    
53. 
    
54. root.mainloop()
    

复制代码

为啥计算框内输入内容后，点击计算第一次会报错
报错如下：
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 1883, in __call__
    return self.func(*args)
TypeError: get_data() takes 0 positional arguments but 1 was given

昨非

我这里没问题啊

                               
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