用python实现一个电子算盘

可以使用Python中的tkinter库构建电子算盘界面，并结合Python的数学运算功能实现计算功能。以下是一个简单的示例代码：

import tkinter as tk

class Calculator:
    def __init__(self, master):
        self.master = master
        master.title("电子算盘")

        # 创建显示屏
        self.display = tk.Entry(master, width=30, justify="right")
        self.display.grid(row=0, column=0, columnspan=4)
        
        # 创建数字按钮
        for i in range(10):
            btn = tk.Button(master, text=str(i), command=lambda x=i: self.add_digit(x))
            btn.grid(row=(9-i)//3+1, column=(i-1)%3)

        # 创建操作符按钮
        plus = tk.Button(master, text="+", command=lambda: self.add_operator("+"))
        plus.grid(row=4, column=3)
        minus = tk.Button(master, text="-", command=lambda: self.add_operator("-"))
        minus.grid(row=3, column=3)
        times = tk.Button(master, text="*", command=lambda: self.add_operator("*"))
        times.grid(row=2, column=3)
        divide = tk.Button(master, text="/", command=lambda: self.add_operator("/"))
        divide.grid(row=1, column=3)
        equal = tk.Button(master, text="=", command=lambda: self.calculate())
        equal.grid(row=5, column=3)
        clear = tk.Button(master, text="清空", command=lambda: self.clear())
        clear.grid(row=1, column=2)

        # 初始化数据
        self.current_num = 0
        self.current_op = "+"
        self.last_num = 0
        self.last_op = "="
        self.reset_flag = True

    def add_digit(self, digit):
        if self.reset_flag:
            self.display.delete(0, tk.END)
            self.reset_flag = False
        current_text = self.display.get()
        if current_text == "0":
            current_text = str(digit)
        else:
            current_text += str(digit)
        self.display.delete(0, tk.END)
        self.display.insert(0, current_text)

    def add_operator(self, operator):
        self.current_num = int(self.display.get())
        self.calculate()
        self.current_op = operator
        self.reset_flag = True

    def calculate(self):
        self.last_num = eval(str(self.last_num) + self.last_op + str(self.current_num))
        self.last_op = self.current_op
        self.current_num = 0
        self.reset_flag = True
        if self.last_op == "=":
            self.display.delete(0, tk.END)
            self.display.insert(0, str(self.last_num))
        else:
            self.display.delete(0, tk.END)
            self.display.insert(0, "0")

    def clear(self):
        self.last_num = 0
        self.last_op = "="
        self.current_num = 0
        self.current_op = "+"
        self.display.delete(0, tk.END)
        self.display.insert(0, "0")
        self.reset_flag = True

root = tk.Tk()
app = Calculator(root)
root.mainloop()