用python简单代码做一个计算器

用python简单代码做一个计算器

import tkinter as tk


class Calc(tk.Tk):
    """计算器窗体类"""
    def __init__(self):
        """初始化实例"""
        tk.Tk.__init__(self)
        self.title("计算器")
        self.memory = 0  # 暂存数值
        self.create()

    def create(self):
        """创建界面"""
        btn_list = ["C", "M->", "->M", "/",
                    "7", "8", "9", "*",
                    "4", "5", "6", "-",
                    "1", "2",