Why is Button parameter "command" executed when declared? [duplicate]

Why is Button parameter "command" executed when declared? [duplicate]

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How can I pass arguments to Tkinter button's callback command?

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Python tkinter text modified callback

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Callback function tkinter button with variable parameter

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Tkinter canvas resizing automatically

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Python - returning from a Tkinter callback

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Why only some Tkinter callback functions need to have an argument but others don't

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Python Tkinter one callback function for two buttons

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Python Tkinter button callback

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Retrieve/get back command callback function from TKinter widget

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tkinter variable trace method

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How can I execute different callbacks for different Tkinter [sub-] Menus?

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Strange Exception in Tkinter callback

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Python Tkinter: App hangs when changing window title via callback event

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Tkinter - ask a widget for its callback

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