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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 _filter_by_moys_slow(self, moys):
 """Filter the Data Collection with a slow method that always works."""

        _filt_values = []
        _filt_datetimes = []
        for i, d in enumerate(self.datetimes):
            if d.moy in moys:
                _filt_datetimes.append(d)
                _filt_values.append(self._values[i])
        return _filt_values, _filt_datetimes