code: def _df_dtypes(self, table_name, convert_dates):
          
          out = self._raw_table_dtypes[table_name]
          if convert_dates:
              out = out.copy()
              for date_column in self._datetime_int_cols[table_name]:
                  out[date_column] = datetime64ns_dtype
  
          return out
docs: Get dtypes to use when unpacking sqlite tables as dataframes.