python实现一个有窗口的复杂的计算器

好的，以下是一个基于 Python Tkinter 模块实现的复杂计算器示例：

import tkinter as tk
from tkinter import messagebox

class Calculator:
    def __init__(self, master):
        self.master = master
        self.master.title("计算器")
        self.master.geometry("300x400")
        self.master.resizable(False, False)

        self.result = tk.StringVar()
        self.equation = tk.StringVar()

        # 显示器
        display = tk.Entry(self.master, textvariable=self.result, font=("Arial", 20), bd=0, justify="right")
        display.place(x=0, y=0, height=80, width=300)

        # 数字按钮
        button_1 = tk.Button(self.master, text="1", font=("Arial", 16), bd=0, command=lambda:self.add_number("1"))
        button_1.place(x=0, y=80, height=80, width=75)

        button_2 = tk.Button(self.master, text="2", font=("Arial", 16), bd=0, command=lambda:self.add_number("2"))
        button_2.place(x=75, y=80, height=80, width=75)

        button_3 = tk.Button(self.master, text="3", font=("Arial", 16), bd=0, command=lambda:self.add_number("3"))
        button_3.place(x=150, y=80, height=80, width=75)

        button_4 = tk.Button(self.master, text="4", font=("Arial", 16), bd=0, command=lambda:self.add_number("4"))
        button_4.place(x=0, y=160, height=80, width=75)

        button_5 = tk.Button(self.master, text="5", font=("Arial", 16), bd=0, command=lambda:self.add_number("5"))
        button_5.place(x=75, y=160, height=80, width=75)

        button_6 = tk.Button(self.master, text="6", font=("Arial", 16), bd=0, command=lambda:self.add_number("6"))
        button_6.place(x=150, y=160, height=80, width=75)

        button_7 = tk.Button(self.master, text="7", font=("Arial", 16), bd=0, command=lambda:self.add_number("7"))
        button_7.place(x=0, y=240, height=80, width=75)

        button_8 = tk.Button(self.master, text="8", font=("Arial", 16), bd=0, command=lambda:self.add_number("8"))
        button_8.place(x=75, y=240, height=80, width=75)

        button_9 = tk.Button(self.master, text="9", font=("Arial", 16), bd=0, command=lambda:self.add_number("9"))
        button_9.place(x=150, y=240, height=80, width=75)

        button_0 = tk.Button(self.master, text="0", font=("Arial", 16), bd=0, command=lambda:self.add_number("0"))
        button_0.place(x=75, y=320, height=80, width=75)

        # 运算符按钮
        button_add = tk.Button(self.master, text="+", font=("Arial", 16), bd=0, command=lambda:self.add_operator("+"))
        button_add.place(x=225, y=80, height=80, width=75)

        button_subtract = tk.Button(self.master, text="-", font=("Arial", 16), bd=0, command=lambda:self.add_operator("-"))
        button_subtract.place(x=225, y=160, height=80, width=75)

        button_multiply = tk.Button(self.master, text="×", font=("Arial", 16), bd=0, command=lambda:self.add_operator("*"))
        button_multiply.place(x=225, y=240, height=80, width=75)

        button_divide = tk.Button(self.master, text="÷", font=("Arial", 16), bd=0, command=lambda:self.add_operator("/"))
        button_divide.place(x=225, y=320, height=80, width=75)

        # 功能按钮
        button_clear = tk.Button(self.master, text="清除", font=("Arial", 16), bd=0, command=self.clear)
        button_clear.place(x=0, y=320, height=80, width=75)

        button_equal = tk.Button(self.master, text="=", font=("Arial", 16), bd=0, command=self.calculate)
        button_equal.place(x=150, y=320, height=80, width=75)

    def add_number(self, number):
        self.equation.set(self.equation.get() + str(number))

    def add_operator(self, operator):
        self.equation.set(self.equation.get() + " " + operator + " ")

    def clear(self):
        self.equation.set("")
        self.result.set("")

    def calculate(self):
        try:
            result = eval(self.equation.get())
            self.result.set(result)
        except:
            messagebox.showerror("错误", "表达式输入有误，请重新输入。")
            self.clear()

if __name__ == "__main__":
    root = tk.Tk()
    app = Calculator(root)
    root.mainloop()

该计算器使用了 Tkinter 模块创建 GUI 窗口，支持数字、基本运算符、清除和等于等功能。用户输入表达式后，单击等于按钮即可计算结果。如果表达式输入有误，计算器会提示错误信息并清空表达式。