{"id":1569,"date":"2020-12-10T01:01:57","date_gmt":"2020-12-10T01:01:57","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1569"},"modified":"2021-01-07T07:33:24","modified_gmt":"2021-01-07T07:33:24","slug":"tkinter-askyesno","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/tkinter\/tkinter-askyesno\/","title":{"rendered":"Tkinter askyesno"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the Tkinter askyesno()<\/code> function to show a dialog that asks for user confirmation.<\/p>\n\n\n\n

Introduction to the Tkinter askyesno() function #<\/a><\/h2>\n\n\n\n

Sometimes, you need to ask for user confirmation. For example, if users click the quit button, you want to ask whether they really want to close the application. Or they just accidentally do so:<\/p>\n\n\n\n

\"Tkinter<\/figure><\/div>\n\n\n\n

To show a dialog that asks for user confirmation, you use the askyesno()<\/code> function.<\/p>\n\n\n\n

The dialog will have a title, a message, and two buttons (yes and no).<\/p>\n\n\n\n

When you click the yes<\/code> button, the function returns True<\/code>. However, if you click the no<\/code> button, it returns False<\/code>.<\/p>\n\n\n\n

The following shows the syntax of the askyesno()<\/code> function:<\/p>\n\n\n

answer = askyesno(title, message, **options)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Note that the answer<\/code> is a Boolean value, either True<\/code> or False<\/code>.<\/p>\n\n\n\n
Tkinter also has another function called askquestion()<\/code>, which is similar to the askyesno()<\/code> function except that it returns a string with a value of 'yes'<\/code> or 'no'<\/code>:<\/p>\n\n\n
answer = askquestion(title, message, **options)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Tkinter askyesno()  function example #<\/a><\/h2>\n\n\n\n
The following program illustrates how to use the Tkinter askyesno()<\/code> function:<\/p>\n\n\n\n
\"Tkinter<\/figure><\/div>\n\n\n\n
When you click the Quit<\/code> button, it’ll show a confirmation dialog: <\/p>\n\n\n\n
\"Tkinter<\/figure><\/div>\n\n\n\n
If you click the yes<\/code> button, the application will be closed. Otherwise, it’ll stay.<\/p>\n\n\n
import<\/span> tkinter as<\/span> tk\nfrom<\/span> tkinter import<\/span> ttk\nfrom<\/span> tkinter.messagebox import<\/span> askyesno\n\n# create the root window<\/span>\nroot = tk.Tk()\nroot.title('Tkinter Yes\/No Dialog'<\/span>)\nroot.geometry('300x150'<\/span>)\n\n# click event handler<\/span>\ndef<\/span> confirm<\/span>()<\/span>:<\/span>\n    answer = askyesno(title='confirmation'<\/span>,\n                    message='Are you sure that you want to quit?'<\/span>)\n    if<\/span> answer:\n        root.destroy()\n\n\nttk.Button(\n    root,\n    text='Ask Yes\/No'<\/span>,\n    command=confirm).pack(expand=True<\/span>)\n\n\n# start the app<\/span>\nroot.mainloop()\n<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The following is the same program but use the object-oriented programming approach:<\/p>\n\n\n
import<\/span> tkinter as<\/span> tk\r\nfrom<\/span> tkinter import<\/span> ttk\r\nfrom<\/span> tkinter.messagebox import<\/span> askyesno, askquestion\r\n\r\n\r\nclass<\/span> App<\/span>(tk.Tk)<\/span>:<\/span>\r\n    def<\/span> __init__<\/span>(self)<\/span>:<\/span>\r\n        super().__init__()\r\n\r\n        self.title('Tkinter Yes\/No Dialog'<\/span>)\r\n        self.geometry('300x150'<\/span>)\r\n\r\n        # Quit button<\/span>\r\n        quit_button = ttk.Button(self, text='Quit'<\/span>, command=self.confirm)\r\n        quit_button.pack(expand=True<\/span>)\r\n\r\n    def<\/span> confirm<\/span>(self)<\/span>:<\/span>\r\n        answer = askyesno(title='Confirmation'<\/span>,\r\n                          message='Are you sure that you want to quit?'<\/span>)\r\n        if<\/span> answer:\r\n            self.destroy()\r\n\r\n\r\nif<\/span> __name__ == \"__main__\"<\/span>:\r\n    app = App()\r\n    app.mainloop()\r<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Summary #<\/a><\/h2>\n\n\n\n
  • Use the Tkinter askyesno()<\/code> function to show a dialog that asks for user confirmation.<\/li>
  • The askyesno()<\/code> function returns True<\/code> if you click the yes button, otherwise, it returns False<\/code>.<\/li>
  • The askquestion()<\/code> function returns a string with a value of 'yes'<\/code> or 'no'<\/code> instead.<\/li><\/ul>\n
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    Was this tutorial helpful ?<\/div>\n\t\t
    \n\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t Yes <\/span>\n\t\t\t<\/button>\n\n\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t No <\/span>\n\t\t\t<\/button>\n\t\t<\/div>\n\t<\/header>\n\n\t
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