写可视化计算器

好的，我可以用Python和Tkinter库来写一个简单的可视化计算器。以下是代码示例：

import tkinter as tk

class Calculator:
    def __init__(self, master):
        self.master = master
        
        # Create the calculator display
        self.display = tk.Entry(master, width=30)
        self.display.grid(row=0, column=0, columnspan=4)

        # Create the calculator buttons
        self.create_button("7", 1, 0)
        self.create_button("8", 1, 1)
        self.create_button("9", 1, 2)
        self.create_button("/", 1, 3)

        self.create_button("4", 2, 0)
        self.create_button("5", 2, 1)
        self.create_button("6", 2, 2)
        self.create_button("*", 2, 3)

        self.create_button("1", 3, 0)
        self.create_button("2", 3, 1)
        self.create_button("3", 3, 2)
        self.create_button("-", 3, 3)

        self.create_button("0", 4, 0)
        self.create_button(".", 4, 1)
        self.create_button("C", 4, 2)
        self.create_button("+", 4, 3)

        self.create_button("=", 5, 0, columnspan=4)

    def create_button(self, text, row, col, rowspan=1, columnspan=1):
        button = tk.Button(self.master, text=text, width=7, height=3, command=lambda: self.button_click(text))
        button.grid(row=row, column=col, rowspan=rowspan, columnspan=columnspan)

    def button_click(self, text):
        if text == "C":
            self.display.delete(0, tk.END)
        elif text == "=":
            try:
                result = eval(self.display.get())
                self.display.delete(0, tk.END)
                self.display.insert(0, result)
            except:
                self.display.delete(0, tk.END)
                self.display.insert(0, "Error")
        else:
            self.display.insert(tk.END, text)

# Create the main window
root = tk.Tk()
root.title("Calculator")

# Create the calculator
calculator = Calculator(root)

# Start the main loop
root.mainloop()

这个代码创建了一个简单的可视化计算器，可以处理加减乘除等基本运算。你可以根据需要进行修改和扩展。