OK Cancel dialog
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from Tkinter import * import math
root = Tk() top = Frame(root) top.pack(side='top')
hwtext = Label(top, text='Hello, World! The sine of') hwtext.pack(side='left')
r = StringVar() r.set('1.2') r_entry = Entry(top, width=6, textvariable=r) r_entry.pack(side='left')
s = StringVar() def comp_s(event): global s s.set('%g' % math.sin(float(r.get()))) # construct string
r_entry.bind('<Return>', comp_s)
compute = Label(top, text=' equals ') compute.pack(side='left')
s_label = Label(top, textvariable=s, width=18) s_label.pack(side='left')
import tkMessageBox def quit(event): if tkMessageBox.askokcancel('Quit','Do you really want to quit?'): root.destroy()
root.bind('<q>', quit)
root.mainloop()
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