Correctly extend a tkinter widget using inheritance

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Question: How to make into a own class from a tkinter.Entry

It’s called inheritance.
All. inherited methods, e.g. .get() behave the same.

class MyEntry(tk.Entry):
    def __init__(self, parent, **kwargs):
        # Defaults
        kwargs['fg'] = 'grey'
        super().__init__(parent, **kwargs)

        self.bind('<FocusIn>', self.on_event)
        self.bind('<FocusOut>', self.on_event)
        self.bind('<Return>', self.on_event)

    def on_event(self, event):
        print('on_event type:{}'.format(event.type))

Usage:

testEntry = MyEntry(module, bg=bgColor_1, width = 30)
testEntry.grid(row=0,column = 1)
testEntry.insert(0,'Presupuesto')

print(testEntry.get())

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