import tkinter as tk

window = tk.Tk()
window.title('计算器')
window.geometry('360x435')
window.attributes("-alpha", 0.95)
window.resizable(0, 0)#窗口大小固定，不能缩放

var = tk.StringVar()


frm_1 = tk.Frame(window, width=360, height=115, bg='CadetBlue').place(x=0, y=0, anchor=tk.NW)#数字显示区
frm_2 = tk.Frame(window, width=270, height=240, bg='DarkSeaGreen').place(x=0, y=115, anchor=tk.NW)#数字键盘
frm_3 = tk.Frame(window, width=90, height=320, bg='Beige').place(x=270, y=115, anchor=tk.NW)#加减乘除
frm_4 = tk.Frame(window, width=270, height=80, bg='CadetBlue').place(x=0, y=355, anchor=tk.NW)#不可循环输出的

var_result = tk.StringVar()
var_dian=tk.StringVar()
var_dian.set('.')


def name(u):
    u='var'+str(u)
    return u

#数字显示区
I = tk.Entry(frm_1,textvariable=var_result,font=('Arial',40),bg='grey')
I.place(x=0,y=0,width=360,height=115)
#获取数字显示区的文字

#函数部分

#计算结果的
def show_result():
    result = I.get()
    print(eval(result))

def delete():
    f.delete(1.0, tk.END)

def get():
    pass


num=1
#数字键盘，可循环显示的
for j in range(3):
    for i in range(3):

        m=0+(i)*90
        n=115+(j)*80
        b=tk.Button(frm_2,text=num,bg='WhiteSmoke',font=('Arial','20'),command=get)
        b.place(x=m,y=n,width=90,height=80)
        num=num+1
#数字键盘，不可循环显示的
v=0

a=tk.Button(frm_4,textvariable=var_dian,bg='Gainsboro',font=('20')).place(x=0,y=355,width=90,height=80)
b=tk.Button(frm_4,text='=',bg='Gainsboro',font=('20'),command=show_result).place(x=180,y=355,width=90,height=80)
f=tk.Button(frm_4,text='0',bg='WhiteSmoke',font=('Arial','20')).place(x=90,y=355,width=90,height=80)



#加减乘除
q=0
for p in ['+','-','*','/']:
    e=tk.Button(frm_3,text=p,bg='Gainsboro',font=('20')).place(x=270,y=115+q*80,width=90,height=80)
    q=q+1

window.mainloop()