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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 _calculate_minimum_silent_period(baudrate):
 """Calculate the silent period length to comply with the 3.5 character silence between messages. Args: baudrate (numerical):
 The baudrate for the serial port Returns: The number of seconds (float) that should pass between each message on the bus. Raises: ValueError, TypeError. """

    _checkNumerical(baudrate, minvalue=1, description='baudrate')  # Avoid division by zero

    BITTIMES_PER_CHARACTERTIME = 11
    MINIMUM_SILENT_CHARACTERTIMES = 3.5

    bittime = 1 / float(baudrate)
    return bittime * BITTIMES_PER_CHARACTERTIME * MINIMUM_SILENT_CHARACTERTIMES