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To: python-list@python.org
From: Peter Otten <__peter__@web.de>
Subject: Re: Bind event is giving me a bug.
Date: Wed, 15 Jan 2014 22:25:31 +0100
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References: <803c85f0-2f0f-4fc9-b043-710a77648546@googlegroups.com> <52D6F952.2010309@mrabarnett.plus.com>
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Xref: csiph.com comp.lang.python:64020

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):
    ...