如何使用 for 循环生成我的按钮？

Question

我正在使用 tkinter 创建一个计算器，并希望最小化按钮的代码。如何在仍然包含 lambda 命令的情况下创建高效的 for 循环？下面是用于创建我的按钮的代码示例

    self.seven = Button(self, text = "7",  width = 10, height = 3, cursor = "hand2", command = lambda: (self.expression(7))).grid(row = 1, column = 0, padx = 1, pady = 1)

    self.eight = Button(self, text = "8",  width = 10, height = 3, cursor = "hand2", command = lambda: (self.expression(8))).grid(row = 1, column = 1, padx = 1, pady = 1)

    self.nine = Button(self, text = "9",  width = 10, height = 3, cursor = "hand2", command = lambda: (self.expression(9))).grid(row = 1, column = 2, padx = 1, pady = 1)

Answer 1

您需要将所有按钮存储在 list:

self.buttons = []
for i in range (7, 10):
    self.buttons.append(Button(self, text = str(i),  width = 10, height = 3, cursor = "hand2", command = lambda i=i: (self.expression(i))).grid(row = 1, column = (i - 1) % 3, padx = 1, pady = 1))

如何使用 for 循环生成我的按钮？

How can I generate my buttons using a for loop?

python

for-loop

tkinter

calculator

button