Peter Otten __peter__ at web.de
Wed Jan 15 16:25:31 EST 2014

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MRAB wrote:

> This will make it call 'get_text' when the button is clicked:
> 
>> Button(root, text = "Submit", command = get_text).pack()

...and then produce a TypeError because of the missing `event` argument. To 
avoid that you can provide a default with

def get_text(event=None):
    ...

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