[Python] Should a tkinter button always have a variable as a name?

I can make a tkinter button like this:

button1 = ttk.Button(root, text = "Button 1", command=lambda: button_click(button1))


or in a loop like this:

tk.Button(root, text=f"Button {i}", command=lambda x=i: button_click(x)).pack()


But the second button does not have a variable name like button1. Therefore, I can't access it by name:

def button_click(button):
button_text = button.cget('text')
ttk.Label(root, text = button_text).pack()


Or does the second button actually have a tkinter default name when created in a loop like this?

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