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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 _normalize_to_unit(self, value, unit):
 """Normalize the value to the unit returned. We use base-1000 for second-based units, and base-1024 for byte-based units. Sadly, the Nagios-Plugins specification doesn't disambiguate base-1000 (KB) and base-1024 (KiB). """

        if unit == 'ms':
            return value / 1000.0
        if unit == 'us':
            return value / 1000000.0
        if unit == 'KB':
            return value * 1024
        if unit == 'MB':
            return value * 1024 * 1024
        if unit == 'GB':
            return value * 1024 * 1024 * 1024
        if unit == 'TB':
            return value * 1024 * 1024 * 1024 * 1024

        return value