用tkinter实现一个如图简单计算器,可以进行加、减、 乘、除四则运算,支持小数点,多次运算 由label和button构成 灵活使用 eval( ) 函数 用grid布局 除零错误提示
时间: 2024-03-20 21:42:15 浏览: 14
好的,下面是实现一个简单计算器的完整代码,包括加、减、乘、除四则运算,支持小数点,多次运算,由label和button构成,灵活使用eval()函数,用grid布局,除零错误提示:
```pythonimport tkinter as tk
root = tk.Tk()
root.title("简单计算器")
result = tk.Label(root, text="", width=25result.grid(row=0, column=0, columnspan=4)
entry = tk.Entry(root, width=25)
entry.grid(row=1, column=0, columnspan=4)
def button_click(number):
current = entry.get()
entry.delete(0, tk.END)
entry.insert(0, str(current) + str(number))
button_7 = tk.Button(root, text="7", width=5, command=lambda: button_click(7))
button_7.grid(row=2, column=0)
button_8 = tk.Button(root, text="8", width=5, command=lambda: button_click(8))
button_8.grid(row=2, column=1)
button_9 = tk.Button(root, text="9", width=5, command=lambda: button_click(9))
button_9.grid(row=2, column=2)
button_4 = tk.Button(root, text="4", width=5, command=lambda: button_click(4))
button_4.grid(row=3, column=0)
button_5 = tk.Button(root, text="5", width=5, command=lambda: button_click(5))
button_5.grid(row=3, column=1)
button_6 = tk.Button(root, text="6", width=5, command=lambda: button_click(6))
button_6.grid(row=3, column=2)
button_1 = tk.Button(root, text="1", width=5, command=lambda: button_click(1))
button_1.grid(row=4, column=0)
button_2 = tk.Button(root, text="2", width=5, command=lambda: button_click(2))
button_2.grid(row=4, column=1)
button_3 = tk.Button(root, text="3", width=5, command=lambda: button_click(3))
button_3.grid(row=4, column=2)
button_0 = tk.Button(root, text="0", width=5, command=lambda: button_click(0))
button_0.grid(row=5, column=0)
button_dot = tk.Button(root, text=".", width=5, command=lambda: button_click("."))
button_dot.grid(row=5, column=1)
button_add = tk.Button(root, text="+", width=5, command=lambda: button_click("+"))
button_add.grid(row=2, column=3)
button_sub = tk.Button(root, text="-", width=5, command=lambda: button_click("-"))
button_sub.grid(row=3, column=3)
button_mul = tk.Button(root, text="*", width=5, command=lambda: button_click("*"))
button_mul.grid(row=4, column=3)
button_div = tk.Button(root, text="/", width=5, command=lambda: button_click("/"))
button_div.grid(row=5, column=3)
def button_equal_click():
try:
result_str = eval(entry.get())
result.configure(text=result_str)
except ZeroDivisionError:
result.configure(text="除零错误")
except:
result.configure(text="输入错误")
button_equal = tk.Button(root, text="=", width=15, command=button_equal_click)
button_equal.grid(row=6, column=0, columnspan=4)
root.mainloop()
```
运行代码后,会弹出一个简单的计算器窗口,支持加、减、乘、除四则运算,支持小数点,多次运算,同时也会进行除零错误和输入错误的提示。