我如何在 tkinter 中创建一组带有循环的按钮？

Question

我正在尝试创建这个程序，基本上我需要在 tkinter 中制作 8 行按钮 但我不知道我怎么能用循环做到这一点 ，没有循环我这样做了：

def decimal():
app = Toplevel(root)
app.title("Traducteur décimal")
app.geometry("400x200")
r1 = Button(app, text="LED 1 ON")
r2 = Button(app, text="LED 1 OFF")
r1.place(x=125,y=0)
r2.place(x=225,y=0)
r3 = Button(app, text="LED 2 ON")
r4 = Button(app, text="LED 2 OFF")
r3.place(x=125, y=40)
r4.place(x=225, y=40)
r5 = Button(app, text="LED 3 ON")
r6 = Button(app, text="LED 3 OFF")
r5.place(x=125, y=80)
r6.place(x=225, y=80)

顺便说一句，我很抱歉英语不好。 谢谢

Answer 1

一种方法是将它们全部放在2-tuples 的list 中，并带有for 循环。作为一个列表，你可以通过索引访问它的元素：

buttons = []

x_loc_on, x_loc_off = (125, 225)

y_start = 0
y_offset = 40

commands = [<16 functions here>]

for row in range(8):
    # calculate the pair's y-position based on row
    y_pos_of_row = y_start + row * y_offset

    # get the row number (starts from 1 unlike the variable `row`; so adding 1)
    row_number = row + 1

    # generate the ON button
    button_1 = Button(app, text=f"LED {row_number} ON", command=commands[row])
    button_1.place(x=x_loc_on, y=y_pos_of_row)

    # generate the OFF button
    button_2 = Button(app, text=f"LED {row_number} OFF", command=commands[row+1])
    button_2.place(x=x_loc_off, y=y_pos_of_row)

    # put this row's ON-OFF button pair as a 2-tuple into a list
    buttons.append((button_1, button_2))

然后您可以通过buttons[i][0] 访问ith 行和ON 按钮，并通过buttons[i][1] 访问同一行OFF 按钮。