设计一个程序,用两个文本框输入数值数据,用列表框存放"+、-、x、÷、幂次方、余数"。用户先输入两个操作数,再从列表框中选择一种运算,即可在标签中显示出计算结果。实现简单加减乘除程序。使用两个单行文本框输入数字,使用列表框选择运算。运行界面如下图5。Python
时间: 2024-11-12 07:37:41 浏览: 3
设计这样一个Python程序,你需要使用Tkinter库来创建图形用户界面(GUI)。下面是一个简单的步骤概述:
1. 导入所需库:
```python
import tkinter as tk
```
2. 创建窗口和部件:
```python
window = tk.Tk()
entry1 = tk.Entry(window)
entry2 = tk.Entry(window)
button1 = tk.Button(window, text="选择运算")
listbox = tk.Listbox(window, height=4, width=10, selectmode=tk.SINGLE)
result_label = tk.Label(window, text="")
```
3. 设置布局:
```python
entry1.pack()
entry2.pack()
button1.pack()
listbox.pack()
result_label.pack()
```
4. 定义运算函数,根据选中的运算符进行相应的计算:
```python
def perform_operation(operator):
num1 = float(entry1.get())
num2 = float(entry2.get())
if operator == "+":
result = num1 + num2
elif operator == "-":
result = num1 - num2
# 添加更多条件 for x, ÷, 幂次方, 余数
result_label.config(text=f"结果: {result}")
# 示例:添加两个按钮对应列表框的选择
for i in ["+", "-", "x", "÷", "pow", "mod"]:
listbox.insert(tk.END, i)
button_text = f"{i} 操作"
button = tk.Button(window, text=button_text, command=lambda o=i: perform_operation(o))
button.pack(side=tk.LEFT)
```
5. 运行主循环:
```python
window.mainloop()
```
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