def import_set(dset, in_stream, headers=True):

    dset.wipe()

    xls_book = openpyxl.reader.excel.load_workbook(BytesIO(in_stream))
    sheet = xls_book.get_active_sheet()

    dset.title = sheet.title

    for i, row in enumerate(sheet.rows):
        row_vals = [c.value for c in row]
        if (i == 0) and (headers):
            dset.headers = row_vals
        else:
            dset.append(row_vals)
If the result is not an error, original_failure() returns None.
dataset/ETHPy150Open kennethreitz/tablib/tablib/formats/_xlsx.py/import_set--crossover with--dataset/ETHPy150Open itamarst/crochet/crochet/tests/test_api.py/EventualResultTests.test_original_failure_not_error