def test_issue_68():
    data = [[1]]
    sheet = p.Sheet(data)
    stream = sheet.save_to_memory("csv")
    eq_(stream.read(), "1\r\n")
    data = {"sheet": [[1]]}
    book = p.Book(data)
    stream = book.save_to_memory("csv")
    eq_(stream.read(), "1\r\n")