求助：为啥会报错
import tkinter as tkimport crcmod.predefined
def get_data():
try:
calc()
except ValueError:
root1 = tk.Tk()
root1.title("提示")
label2 = tk.Label(root1, text="请输入正确的十六进制数据\n例如a->0a")
label2.pack()
button3 = tk.Button(root1, text="确定", command=root1.destroy)
button3.pack()
return False
def calc():
arr = entry1.get()
print("计算输入框内的值得校验和")
crc8 = crcmod.predefined.Crc('crc-8')
crc8.update(bytes().fromhex(arr))
data = hex(crc8.crcValue)
print(data)
v.set(data)
return True
def clean():
print("清除输入框内及生成的校验和")
entry1.delete(0, 'end')
entry2.delete(0, 'end')
root = tk.Tk()
root.title("CRC校验和工具")
root.geometry('550x150')
label1 = tk.Label(root, text="请输入需要校验的数据：").grid(row=0, sticky='w', padx=10, pady=5)
entry1 = tk.Entry(root)
entry1.place(x=10, y=30, width=500, height=35)
entry1.insert(0, "默认文本...")
v = tk.StringVar()
testCMD = root.register(get_data)
entry2 = tk.Entry(root, textvariable=v, validate='all', validatecommand=(testCMD, '%P'))
entry2.place(x=75, y=95,width=50)
button1 = tk.Button(root, text="计算", command=get_data).place(x=10, y=90)
button2 = tk.Button(root, text="清除", command=clean).place(x=200, y=90)
root.mainloop()
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 我这里没问题啊
https://s1.ax1x.com/2020/08/26/d247QK.png
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