如何使用 for 循环生成按钮？ [复制]答案

【问题标题】：How can I generate my buttons using a for loop? [duplicate]如何使用 for 循环生成按钮？ [复制]
【发布时间】：2019-09-17 00:27:52
【问题描述】：

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 命令的情况下进行有效的 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)

【问题讨论】：

标签： python for-loop button tkinter calculator

【解决方案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))

【讨论】：