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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 timezone(self, value=0.0):
 """Corresponds to IDD Field `timezone` Time relative to GMT. Args: value (float):
 value for IDD Field `timezone` Unit: hr - not on standard units list??? Default value: 0.0 value >= -12.0 value <= 12.0 if `value` is None it will not be checked against the specification and is assumed to be a missing value Raises: ValueError: if `value` is not a valid value """

        if value is not None:
            try:
                value = float(value)
            except ValueError:
                raise ValueError('value {} need to be of type float '
                                 'for field `timezone`'.format(value))
            if value < -12.0:
                raise ValueError('value need to be greater or equal -12.0 '
                                 'for field `timezone`')
            if value > 12.0:
                raise ValueError('value need to be smaller 12.0 '
                                 'for field `timezone`')

        self._timezone = value