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发表于 2022-1-25 17:46:22
From FishC Mobile
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# 为什么把函数放在外面就会报错啊!
# 报错的代码:
import tkinter as tk
def user_input():
var = e.get()
t.insert('end', var)
def mytk():
window = tk.Tk()
window.title('my window')
e = tk.Entry(window, show=None)
e.pack()
button = tk.Button(window, text='点击', width=15, height=2, command=user_input)
button.pack()
t = tk.Text(window, height=2)
t.pack()
window.mainloop()
mytk()
# 正常运行的代码:
import tkinter as tk
def mytk():
window = tk.Tk()
window.title('my window')
e = tk.Entry(window, show=None)
e.pack()
def user_input():
var = e.get()
t.insert('end', var)
button = tk.Button(window, text='点击', width=15, height=2, command=user_input)
button.pack()
t = tk.Text(window, height=2)
t.pack()
window.mainloop()
mytk()
# 求解!!!
或者把e当成全局变量
- def user_input():
- var = e.get()
- t.insert('end', var)
- def mytk():
- global e # 声明全局变量
- window = tk.Tk()
- window.title('my window')
- e = tk.Entry(window, show=None)
- e.pack()
- button = tk.Button(window, text='点击', width=15,
- height=2, command=user_input)
- button.pack()
- t = tk.Text(window, height=2)
- t.pack()
- window.mainloop()
- mytk()
复制代码
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