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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 rounder(input_number, digit=5):
 """ Round input number and convert to str. :param input_number: input number :type input_number : anything :param digit: scale (the number of digits to the right of the decimal point in a number.) :type digit : int :return: round number as str """

    if isinstance(input_number, tuple):
        tuple_list = list(input_number)
        tuple_str = []
        for i in tuple_list:
            if isfloat(i):
                tuple_str.append(str(numpy.around(i, digit)))
            else:
                tuple_str.append(str(i))
        return "(" + ",".join(tuple_str) + ")"
    if isfloat(input_number):
        return str(numpy.around(input_number, digit))
    return str(input_number)