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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def quick_confirm(prompt, default_value):
 """ Function to display a quick confirmation for user input **Parameters:** - **prompt:** Text to display before confirm - **default_value:** Default value for no entry **Returns:** 'y', 'n', or Default value. """

        valid = False
        value = default_value.lower()
        while not valid:
            input_val = compat_input(prompt + "[{0}]: ".format(default_value))

            if input_val == "":
                value = default_value.lower()
                valid = True
            else:
                try:
                    if input_val.lower() in ['y', 'n']:
                        value = input_val.lower()
                        valid = True
                    else:
                        print("ERROR: enter 'Y' or 'N'.")
                        valid = False

                except ValueError:
                    print("ERROR: enter 'Y' or 'N'.")
                    valid = False

        return value