python - 電卓 - ukyo_python @ ウィキ

# -*- coding: utf-8 -*-
from Tkinter import *
import Tkinter as tk
 
 
##############################################################################
#フレーム
class Use_Frame(tk.Frame):
    def __init__(self, master=None):
        tk.Frame.__init__(self, master)
        self.grid(column=0, row=0)
 
 
##############################################################################
#ボタン
class Use_Button(tk.Button):
    def __init__(self, master=None):
        tk.Button.__init__(self, master)
 
        self["height"] = 3
        self["width"] = 6
        self["font"] = ("Helvetica", 15)
        self["command"] = self.input_exe
 
    def input_exe(self):
        Label.push_list.append(self["text"])
 
        if self["text"] == "=":
            self.cal()
            Label.push_list = []
 
        elif self["text"] == "C":
            Label.push_list = []
            Label.Display()
 
        else:
            Label.Display()
 
    def cal(self):
        result = eval(Label.display_item)
        Label.push_list.append(str(result))
        Label.Display()        
 
##############################################################################
#ラベル
class Use_Label(tk.Label):
    def __init__(self, master=None):
        tk.Label.__init__(self, master)
 
        self["font"] = ("Helvetica", 20)
        self["width"] = 20
        self["anchor"] = "e"
 
        self.push_list = []
 
    def Display(self):
        self.display_item = "".join(self.push_list)
        self["text"] = self.display_item
 
##############################################################################
 
root = Tk()
root.title("計算機")
 
 
Main = Use_Frame(root)
Main.grid(column=0, row=1)
 
##############################################################################
#ボタンの作成、1から9まではfor文で、0と各種演算子は別に作成    
Button_number = 9
 
for Button_num in range(Button_number):
    Button = Use_Button(Main)
 
    yoko = Button_num % 3
    tate = Button_num // 3 + 1
 
    Button.grid(column=yoko, row=tate)
    Button["text"] = "{0}".format(Button_num + 1)
 
Button_0 = Use_Button(Main)
Button_0.grid(column=1, row=4)
Button_0["text"] = "0"
 
Button_plus = Use_Button(Main)
Button_plus.grid(column=3, row=3)
Button_plus["text"] = "+"
 
Button_minus = Use_Button(Main)
Button_minus.grid(column=4, row=3)
Button_minus["text"] = "-"
 
Button_multi = Use_Button(Main)
Button_multi.grid(column=3, row=2)
Button_multi["text"] = "*"
 
Button_div = Use_Button(Main)
Button_div.grid(column=4, row=2)
Button_div["text"] = "/"
 
Button_eqa = Use_Button(Main)
Button_eqa.grid(column=4, row=4)
Button_eqa["text"] = "="
 
Button_point = Use_Button(Main)
Button_point.grid(column=2, row=4)
Button_point["text"] = "."
 
Button_clear = Use_Button(Main)
Button_clear.grid(column=4, row=1)
Button_clear["text"] = "C"
 
Sub = Use_Frame(root)
Sub.grid(column=0, row=0)
 
Label = Use_Label(Sub)
Label.grid(column=0,row=0)
 
root.mainloop()