我正在使用 python（xlrd 包）从 excel 表中提取数据。随着原始数据我得到一些垃圾数据，请帮我删除那些
获取诸如 [text:u 之类的垃圾值，如下所示：
[文字：u'NAME'，文字：u'JACK']
<CODE>
from xlrd import open_workbook
book = open_workbook('C:/Users/arun/Desktop/EX.xls')
sheet0 = book.sheet_by_index(0)
#sheet1 = book.sheet_by_index(1)
print sheet0.col(0)
print sheet0.col(2)
print sheet0.col(3)
print sheet0.col(4)
print sheet0.col(5)
print sheet0.col(6)
print sheet0.col(7)
print sheet0.col(8)
print sheet0.col(9)
print sheet0.col(10)
print sheet0.col(12)
print sheet0.col(13)
print sheet0.col(14)
print sheet0.col(15)
print sheet0.col(16)
print sheet0.col(17)
print sheet0.col(18)
print sheet0.col(19)
print sheet0.col(20)
print sheet0.col(21)
print sheet0.col(22)
print sheet0.col(23)
print sheet0.col(24)
print sheet0.col(25)
print sheet0.col(26)
print sheet0.col(27)
</CODE>