python写简单的计算器,具有图形用户界面,能实现常用的算术计算功能。 【功能需求】 (1)具有图形用户界面。 (2)能实现加、减、乘、除基本运算和清零功能。 (4)计算器至少有“查看”、“帮助”两个菜单,可扩展计算器的其他功能
时间: 2023-12-23 13:01:55 浏览: 23
好的,非常感谢您的提问。针对您的需求,可以使用 Python 的 GUI 库 tkinter 来编写一个简单的计算器,以下是代码示例:
```python
from tkinter import *
class Calculator:
def __init__(self, master):
self.master = master
master.title("计算器")
# 显示输入框
self.entry = Entry(master, width=30, borderwidth=5)
self.entry.grid(row=0, column=0, columnspan=4, padx=10, pady=10)
# 定义数字和操作符按钮
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))
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)
self.button_equal = Button(master, text="=", padx=91, pady=20, command=self.equal)
self.button_clear = Button(master, text="清零", padx=79, pady=20, command=self.clear)
# 将按钮放置在计算器上
self.button_1.grid(row=3, column=0)
self.button_2.grid(row=3, column=1)
self.button_3.grid(row=3, 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=1, column=0)
self.button_8.grid(row=1, column=1)
self.button_9.grid(row=1, column=2)
self.button_0.grid(row=4, column=0)
self.button_clear.grid(row=4, column=1, columnspan=2)
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)
self.button_equal.grid(row=5, column=1, columnspan=2)
def button_click(self, number):
current = self.entry.get()
self.entry.delete(0, END)
self.entry.insert(0, str(current) + str(number))
def clear(self):
self.entry.delete(0, END)
def add(self):
first_number = self.entry.get()
global f_num
global math
math = "addition"
f_num = int(first_number)
self.entry.delete(0, END)
def subtract(self):
first_number = self.entry.get()
global f_num
global math
math = "subtraction"
f_num = int(first_number)
self.entry.delete(0, END)
def multiply(self):
first_number = self.entry.get()
global f_num
global math
math = "multiplication"
f_num = int(first_number)
self.entry.delete(0, END)
def divide(self):
first_number = self.entry.get()
global f_num
global math
math = "division"
f_num = int(first_number)
self.entry.delete(0, END)
def equal(self):
second_number = self.entry.get()
self.entry.delete(0, END)
if math == "addition":
self.entry.insert(0, f_num + int(second_number))
elif math == "subtraction":
self.entry.insert(0, f_num - int(second_number))
elif math == "multiplication":
self.entry.insert(0, f_num * int(second_number))
elif math == "division":
self.entry.insert(0, f_num / int(second_number))
# 创建主窗口
root = Tk()
# 创建计算器对象
my_calculator = Calculator(root)
# 运行窗口
root.mainloop()
```
这个计算器实现了加、减、乘、除以及清零功能,还具有图形用户界面。您可以根据需要扩展其他功能。