用python写代码：用tkinter实现一个简单计算器，可以进行加减乘除四则运算，支持小数点，支持多次运算，由label和button构成，并灵活运用eval函数，用grid布局，并有除零错误提示。（不使用class分类））

好的，以下是代码实现：

import tkinter as tk

def calculate():
    try:
        result = eval(entry.get())
        label.config(text="计算结果：" + str(result))
    except ZeroDivisionError:
        label.config(text="错误：除数不能为0")
    except:
        label.config(text="错误：输入有误")

def button_click(number):
    current = entry.get()
    entry.delete(0, tk.END)
    entry.insert(0, str(current) + str(number))

def clear():
    entry.delete(0, tk.END)
    label.config(text="计算结果：")

# 创建窗口
window = tk.Tk()
window.title("简单计算器")

# 创建输入框和标签
entry = tk.Entry(window, width=30, borderwidth=5)
entry.grid(row=0, column=0, columnspan=4, padx=10, pady=10)
label = tk.Label(window, text="计算结果：")
label.grid(row=1, column=0, columnspan=4)

# 创建按钮
button_1 = tk.Button(window, text="1", padx=40, pady=20, command=lambda: button_click(1))
button_2 = tk.Button(window, text="2", padx=40, pady=20, command=lambda: button_click(2))
button_3 = tk.Button(window, text="3", padx=40, pady=20, command=lambda: button_click(3))
button_4 = tk.Button(window, text="4", padx=40, pady=20, command=lambda: button_click(4))
button_5 = tk.Button(window, text="5", padx=40, pady=20, command=lambda: button_click(5))
button_6 = tk.Button(window, text="6", padx=40, pady=20, command=lambda: button_click(6))
button_7 = tk.Button(window, text="7", padx=40, pady=20, command=lambda: button_click(7))
button_8 = tk.Button(window, text="8", padx=40, pady=20, command=lambda: button_click(8))
button_9 = tk.Button(window, text="9", padx=40, pady=20, command=lambda: button_click(9))
button_0 = tk.Button(window, text="0", padx=40, pady=20, command=lambda: button_click(0))
button_point = tk.Button(window, text=".", padx=41, pady=20, command=lambda: button_click("."))
button_add = tk.Button(window, text="+", padx=39, pady=20, command=lambda: button_click("+"))
button_subtract = tk.Button(window, text="-", padx=41, pady=20, command=lambda: button_click("-"))
button_multiply = tk.Button(window, text="*", padx=40, pady=20, command=lambda: button_click("*"))
button_divide = tk.Button(window, text="/", padx=41, pady=20, command=lambda: button_click("/"))
button_clear = tk.Button(window, text="清除", padx=77, pady=20, command=clear)
button_equal = tk.Button(window, text="=", padx=91, pady=20, command=calculate)

# 将按钮放入窗口
button_1.grid(row=2, column=0)
button_2.grid(row=2, column=1)
button_3.grid(row=2, column=2)
button_4.grid(row=3, column=0)
button_5.grid(row=3, column=1)
button_6.grid(row=3, column=2)
button_7.grid(row=4, column=0)
button_8.grid(row=4, column=1)
button_9.grid(row=4, column=2)
button_0.grid(row=5, column=0)
button_point.grid(row=5, column=1)
button_add.grid(row=2, column=3)
button_subtract.grid(row=3, column=3)
button_multiply.grid(row=4, column=3)
button_divide.grid(row=5, column=3)
button_clear.grid(row=6, column=0, columnspan=2)
button_equal.grid(row=6, column=2, columnspan=2)

# 运行窗口
window.mainloop()

这个代码用tkinter实现了一个简单的计算器，支持加减乘除四则运算，支持小数点，支持多次运算，并且有除零错误提示。