how to fix AttributeError: 'NoneType' object has no attribute 'get' for tkinter entry

Question

我的 tkinter 条目正在返回 none。

我的主要代码有同样的问题，所以我决定编写一个较小的代码来测试，我有同样的问题：

from tkinter import *

root = Tk()

a = Entry(root).grid(row = 0, column = 0)

b = Button(root,text = 'CLICK', command= lambda: test()).grid(row = 2, column = 2)

def test():
    print(a.get())


root.mainloop()

Answer 1

它是 entry.grid(...) return None

我想你想要

    from tkinter import *

    root = Tk()

    a = Entry(root)
    a.grid(row = 0, column = 0)

    b = Button(root,text = 'CLICK', command= lambda: test()).grid(row = 2, column = 2)

    def test():
        print(a.get())


    root.mainloop()

how to fix AttributeError: 'NoneType' object has no attribute 'get' for tkinter entry

how to fix AttributeError: 'NoneType' object has no attribute 'get' for tkinter entry

python

tkinter

tkinter-entry