how to get value from input box in tikenter code example

Example 1: entered_text_1 = textbox_1.get(1.0, tk.END+"-1c")

def retrieve_input():
    input = self.myText_Box.get("1.0",END)

Example 2: entered_text_1 = textbox_1.get(1.0, tk.END+"-1c")

def retrieve_input():
    input = self.myText_Box.get("1.0",'end-1c')