使用tkinter制作一个简单的计算器,能完成浮点数的加减乘除计算。(一个浮点数不能包含两个小数点)
时间: 2024-05-10 11:15:38 浏览: 16
好的,以下是基于tkinter的浮点数计算器的代码:
```python
import tkinter as tk
class Calculator:
def __init__(self, master):
self.master = master
master.title("浮点数计算器")
self.entry = tk.Entry(master, width=40, borderwidth=5)
self.entry.grid(row=0, column=0, columnspan=4, padx=10, pady=10)
# Create buttons
self.button_1 = tk.Button(master, text="1", padx=40, pady=20, command=lambda: self.button_click(1))
self.button_2 = tk.Button(master, text="2", padx=40, pady=20, command=lambda: self.button_click(2))
self.button_3 = tk.Button(master, text="3", padx=40, pady=20, command=lambda: self.button_click(3))
self.button_4 = tk.Button(master, text="4", padx=40, pady=20, command=lambda: self.button_click(4))
self.button_5 = tk.Button(master, text="5", padx=40, pady=20, command=lambda: self.button_click(5))
self.button_6 = tk.Button(master, text="6", padx=40, pady=20, command=lambda: self.button_click(6))
self.button_7 = tk.Button(master, text="7", padx=40, pady=20, command=lambda: self.button_click(7))
self.button_8 = tk.Button(master, text="8", padx=40, pady=20, command=lambda: self.button_click(8))
self.button_9 = tk.Button(master, text="9", padx=40, pady=20, command=lambda: self.button_click(9))
self.button_0 = tk.Button(master, text="0", padx=40, pady=20, command=lambda: self.button_click(0))
self.button_decimal = tk.Button(master, text=".", padx=42, pady=20, command=lambda: self.button_click('.'))
self.button_add = tk.Button(master, text="+", padx=39, pady=20, command=lambda: self.button_operator('+'))
self.button_subtract = tk.Button(master, text="-", padx=41, pady=20, command=lambda: self.button_operator('-'))
self.button_multiply = tk.Button(master, text="*", padx=40, pady=20, command=lambda: self.button_operator('*'))
self.button_divide = tk.Button(master, text="/", padx=41, pady=20, command=lambda: self.button_operator('/'))
self.button_clear = tk.Button(master, text="清除", padx=79, pady=20, command=self.button_clear)
self.button_equal = tk.Button(master, text="=", padx=91, pady=20, command=self.button_equal)
# Put the buttons on the screen
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_decimal.grid(row=4, column=1)
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_clear.grid(row=5, column=1, columnspan=2)
self.button_equal.grid(row=7, column=0, columnspan=4)
self.first_number = None
self.operator = None
self.second_number = None
self.result = None
def button_click(self, number):
current = self.entry.get()
if str(number) == '.' and '.' in current:
return
self.entry.delete(0, tk.END)
self.entry.insert(0, str(current) + str(number))
def button_operator(self, operator):
self.first_number = float(self.entry.get())
self.operator = operator
self.entry.delete(0, tk.END)
def button_clear(self):
self.entry.delete(0, tk.END)
self.first_number = None
self.operator = None
self.second_number = None
self.result = None
def button_equal(self):
self.second_number = float(self.entry.get())
if self.operator == '+':
self.result = self.first_number + self.second_number
elif self.operator == '-':
self.result = self.first_number - self.second_number
elif self.operator == '*':
self.result = self.first_number * self.second_number
elif self.operator == '/':
self.result = self.first_number / self.second_number
self.entry.delete(0, tk.END)
self.entry.insert(0, self.result)
root = tk.Tk()
my_calculator = Calculator(root)
root.mainloop()
```
运行后,会弹出一个简单的计算器窗口,可以进行加减乘除的浮点数计算,也可以清除结果。