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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 _get_all_data(self, start_date, end_date):
 """Get the needed data from all of the vars in the calculation."""

        return [self._get_input_data(var, start_date, end_date)
                for var in _replace_pressure(self.variables,
                                             self.dtype_in_vert)]