{"id":1584,"date":"2020-12-10T02:59:46","date_gmt":"2020-12-10T02:59:46","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=1584"},"modified":"2020-12-11T00:55:03","modified_gmt":"2020-12-11T00:55:03","slug":"tkinter-askretrycancel","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/tkinter\/tkinter-askretrycancel\/","title":{"rendered":"Tkinter askretrycancel"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to use the Tkinter askretrycancel()<\/code> function to show a Retry\/Cancel confirmation dialog.<\/p>\n\n\n\n

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

Sometimes, the application performs a task but fails to do so because of an error.<\/p>\n\n\n\n

For example, you may want to connect to a database server. However, the database server is currently not reachable. It may be offline for a short period of time.<\/p>\n\n\n\n

In this case, you can display a confirmation dialog that allow users to reconnect to the database or just keep the application as is.<\/p>\n\n\n\n

To display the Retry\/Cancel dialog, you can use the askretrycancel()<\/code> function:<\/p>\n\n\n

answer = askretrycancel(title, message, **options)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The askretrycancel()<\/code> function returns True<\/code> if the Retry<\/code> button is clicked. If the Cancel<\/code> button is clicked, it returns False<\/code>.<\/p>\n\n\n\n
Tkinter askretrycancel() function example #<\/a><\/h2>\n\n\n\n
The following program shows a button that simulates a bad database connection:<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
If you click the button, it’ll show a Retry\/Cancel dialog saying that the database server is not reachable. It’ll also request you to reconnect to the database server:<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
If you click the Retry button, it’ll show a dialog indicating that the program is attempting to reconnect to the database server.<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
Program:<\/p>\n\n\n
import<\/span> tkinter as<\/span> tk\nfrom<\/span> tkinter import<\/span> ttk\nfrom<\/span> tkinter.messagebox import<\/span> askretrycancel, showinfo\n\n# create the root window<\/span>\nroot = tk.Tk()\nroot.title('Tkinter OK\/Retry Dialog'<\/span>)\nroot.geometry('300x150'<\/span>)\n\n# click event handler<\/span>\ndef<\/span> confirm<\/span>()<\/span>:<\/span>\n    answer = askretrycancel(\n        title='Connection Issue'<\/span>,\n        message='The database server is unreachable. Do you want to retry?'<\/span>\n    )\n    if<\/span> answer:\n        showinfo(\n            title='Information'<\/span>,\n            message='Attempt to connect to the database again.'<\/span>)\n\n\nttk.Button(\n    root,\n    text='Connect to the Database Server'<\/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
Summary #<\/a><\/h2>\n\n\n\n
  • Use the askretrycancel()<\/code> function to display a Retry\/Cancel dialog to confirm users to carry an operation again.<\/li>
  • The askretrycancel()<\/code> function returns True<\/code> if the Retry button is clicked. If the Cancel button is clicked, it returns False<\/code>.<\/li><\/ul>\n
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