python - 当我从组合框选择值时，get方法会导致错误

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Tkinter: AttributeError: NoneType object has no attribute <attribute name>
                                
                                    （2个答案）
                                
                        
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>>> keyvalue = ('cat', 'dog')
>>> cboCombo = ttk.Combobox(root, values=keyvalue, width=68)
>>> value = cboCombo.get()

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'get'

其current（）方法也会生成相同的错误。

最佳答案

用户tkinter StringVar。

import tkinter as tk

var = tk.StringVar()
keyvalue = ('cat', 'dog')
cboCombo = ttk.Combobox(root, values=keyvalue, textvariable=var, width=68)
value = var.get()

关于python - 当我从组合框选择值时，get方法会导致错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/59957267/