Python图形化界面设计四则运算设计

好的，我可以介绍一下使用 Python 的 tkinter 模块来设计一个简单的四则运算计算器。

以下是代码示例：

from tkinter import *

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

        # 创建显示结果的文本框
        self.display = Entry(master, width=30, borderwidth=5)
        self.display.grid(row=0, column=0, columnspan=4, padx=10, pady=10)

        # 创建数字按钮
        self.button_1 = Button(master, text="1", padx=40, pady=20, command=lambda: self.button_click(1))
        self.button_2 = Button(master, text="2", padx=40, pady=20, command=lambda: self.button_click(2))
        self.button_3 = Button(master, text="3", padx=40, pady=20, command=lambda: self.button_click(3))
        self.button_4 = Button(master, text="4", padx=40, pady=20, command=lambda: self.button_click(4))
        self.button_5 = Button(master, text="5", padx=40, pady=20, command=lambda: self.button_click(5))
        self.button_6 = Button(master, text="6", padx=40, pady=20, command=lambda: self.button_click(6))
        self.button_7 = Button(master, text="7", padx=40, pady=20, command=lambda: self.button_click(7))
        self.button_8 = Button(master, text="8", padx=40, pady=20, command=lambda: self.button_click(8))
        self.button_9 = Button(master, text="9", padx=40, pady=20, command=lambda: self.button_click(9))
        self.button_0 = Button(master, text="0", padx=40, pady=20, command=lambda: self.button_click(0))

        # 将数字按钮放置在界面上
        self.button_1.grid(row=1, column=0)
        self.button_2.grid(row=1, column=1)
        self.button_3.grid(row=1, column=2)

        self.button_4.grid(row=2, column=0)
        self.button_5.grid(row=2, column=1)
        self.button_6.grid(row=2, column=2)

        self.button_7.grid(row=3, column=0)
        self.button_8.grid(row=3, column=1)
        self.button_9.grid(row=3, column=2)

        self.button_0.grid(row=4, column=1)

        # 创建操作符按钮
        self.button_add = Button(master, text="+", padx=39, pady=20, command=self.add)
        self.button_subtract = Button(master, text="-", padx=41, pady=20, command=self.subtract)
        self.button_multiply = Button(master, text="*", padx=40, pady=20, command=self.multiply)
        self.button_divide = Button(master, text="/", padx=41, pady=20, command=self.divide)

        # 将操作符按钮放置在界面上
        self.button_add.grid(row=5, column=0)
        self.button_subtract.grid(row=6, column=0)
        self.button_multiply.grid(row=6, column=1)
        self.button_divide.grid(row=6, column=2)

        # 创建清空和等于按钮
        self.button_clear = Button(master, text="Clear", padx=79, pady=20, command=self.clear)
        self.button_equals = Button(master, text="=", padx=91, pady=20, command=self.equals)

        # 将清空和等于按钮放置在界面上
        self.button_clear.grid(row=4, column=0, columnspan=2)
        self.button_equals.grid(row=4, column=2, columnspan=2)

        # 创建变量用于存储数字和操作符
        self.num1 = None
        self.num2 = None
        self.operator = None

    # 按钮点击事件处理函数
    def button_click(self, number):
        current = self.display.get()
        self.display.delete(0, END)
        self.display.insert(0, str(current) + str(number))

    # 操作符按钮处理函数
    def add(self):
        self.num1 = float(self.display.get())
        self.operator = "+"
        self.display.delete(0, END)

    def subtract(self):
        self.num1 = float(self.display.get())
        self.operator = "-"
        self.display.delete(0, END)

    def multiply(self):
        self.num1 = float(self.display.get())
        self.operator = "*"
        self.display.delete(0, END)

    def divide(self):
        self.num1 = float(self.display.get())
        self.operator = "/"
        self.display.delete(0, END)

    # 清空按钮处理函数
    def clear(self):
        self.num1 = None
        self.num2 = None
        self.operator = None
        self.display.delete(0, END)

    # 等于按钮处理函数
    def equals(self):
        if self.operator is None:
            return

        self.num2 = float(self.display.get())
        self.display.delete(0, END)

        if self.operator == "+":
            result = self.num1 + self.num2
        elif self.operator == "-":
            result = self.num1 - self.num2
        elif self.operator == "*":
            result = self.num1 * self.num2
        elif self.operator == "/":
            result = self.num1 / self.num2

        self.display.insert(0, result)

# 创建主窗口
root = Tk()

# 创建计算器实例
calculator = Calculator(root)

# 运行主循环
root.mainloop()

这个计算器界面包括数字按钮、操作符按钮、清空按钮和等于按钮。通过点击数字按钮和操作符按钮，我们可以输入并存储数字和操作符。当点击等于按钮时，程序会根据存储的数字和操作符计算结果并显示在文本框中。

这只是一个简单的示例，你可以根据需要自行扩展和修改。