按钮在一个非常简单的tkinter应用程序中不起作用

Question

我正在尝试推广ttk.Notebook中选项卡和按钮的创建。到目前为止，我拥有的是：

from tkinter.ttk import Notebook, Frame
from tkinter import Button, Tk
f1 = lambda: print("f1")
f2 = lambda: print("f2")
f3 = lambda: print("f3")
f4 = lambda: print("f4")
f5 = lambda: print("f5")
f6 = lambda: print("f6")
f7 = lambda: print("f7")
frames = ["F1", "F2", "F3"]
labels = [('f1', 'f2', 'f3'), ('f4', 'f5'), ('f6', 'f7')]
commands = [(f1, f2, f3), (f4, f5), (f6, f7)]
tk = Tk()
notebook = Notebook(tk)
for i, f in enumerate(frames):
frame = Frame(notebook)
notebook.add(frame, text=f)
for j, label in labels[i]:
button = Button(frame, text=label, command=commands[i])
button.pack()
notebook.pack()
tk.mainloop()

不幸的是，当我点击生成的按钮时，它们都没有像预期的那样做出响应，即打印到终端。

为什么我的最小tkinter应用程序没有按预期工作？

Answer 1

我在上面的脚本中遇到了一些问题。这是一个有效的：

from tkinter.ttk import Notebook, Frame
from tkinter import Button, Tk
import pdb
f1 = lambda: print("f1")
f2 = lambda: print("f2")
f3 = lambda: print("f3")
f4 = lambda: print("f4")
f5 = lambda: print("f5")
f6 = lambda: print("f6")
f7 = lambda: print("f7")
frames = ["F1", "F2", "F3"]
labels = [('f1', 'f2', 'f3'), ('f4', 'f5'), ('f6', 'f7')]
commands = [(f1, f2, f3), (f4, f5), (f6, f7)]
tk = Tk()
notebook = Notebook(tk)
for i, f in enumerate(frames):
frame = Frame(notebook)
notebook.add(frame, text=f)
for j, label in enumerate(labels[i]):
button = Button(frame, text=label, command=commands[i][j])
button.pack()
notebook.pack()
tk.mainloop()