计算器(python Tk编写)
from __future__ import division from Tkinter import Tk, Entry, Button, Label, mainloop from tkFont import Font def pp(ev=None): foodl = '' try: foodl = eval( text.get()) except : pass if isinstance(foodl, (int,float,long)): pass else: foodl = 'Error..' label.config(text=foodl) #主窗口 top = Tk() top.title('compute') ft = Font(family = ('Verdana'), size = 8 ) #字体 #注册组件 text = Entry(top, font= ft) button = Button(top, text='计算(注意先后运算)', command=pp) label = Label(text='运算符: + - * / % **', font=ft) Enter = lambda x: x.keycode == 13 and pp() Key = lambda x: label.config(text='运算符: + - * / % **') text.bind('<Key>', Enter)#回车事件 text.focus() #获得焦点 # text.bind('<Button-1>', Key) text.pack() button.pack() label.pack() mainloop()