Das deutsche Python-Forum

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    def sichere():
        print (var.get())
        
    suchmaschine=[('Google', 'google'),('Bing', 'bing')]

    var = StringVar()
    for text, value in suchmaschine:
        Radiobutton(root, text=text,value = value, textvariable=var, command=sichere).pack(anchor=W)
        var.set("google")

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textvariable=var

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variable=var

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import Tkinter as tk


class Gui(object):

  def __init__(self, engines):

    self.root = tk.Tk()
    self.engines = engines
    self.ivar = tk.IntVar()
    self.radiobuttons = [tk.Radiobutton(self.root, text=engine, variable=self.ivar, value=i,
                                        command=self.check) for i, engine in enumerate(engines)]
    for i, but in enumerate(self.radiobuttons):
      but.grid(row=i, sticky=tk.W)
      
    #self.ivar.set(1)
    self.radiobuttons[1].select()

    
  def check(self):

    print self.engines[self.ivar.get()]

     
  def run(self):

    self.root.mainloop()


if __name__ == '__main__':

  engines = 'Google', 'Bing', 'Web-Search', 'Ecosia'
  Gui(engines).run()