Python读写excel练习_去除excel中乱码行，并添加列

import xlrd,xlwt
EXCEL_NAME = ‘app_student.xls‘
def delete_messy_code(excel_name): #删除乱码
    book = xlrd.open_workbook(excel_name)
    sheet = book.sheet_by_index(0)
    data = []
    for i in range(sheet.nrows):
        if ‘?‘ in str(sheet.row_values(i)):#仅将没有乱码的数据加入data[]
            continue
        else:
            data.append(sheet.row_values(i))
    return data

def update_col(data): #增加列，并填入是否毕业
    for d in data:
        if d[5] == ‘grade‘:
            d.append(‘是否毕业‘)
        elif d[5] == ‘天蝎座‘:
            d.append(‘毕业‘)
        else:
            d.append(‘未毕业‘)
    return data

def wt_excel(excel_name): #将处理后的结果写入Excel
    rb = xlwt.Workbook()
    rbs =rb.add_sheet(‘sheet1‘)
    data = delete_messy_code(excel_name)
    row = 0
    for field in update_col(data):
        for col, f in enumerate(field):
            rbs.write(row,col,f)
        row += 1
    rb.save(excel_name)

wt_excel(EXCEL_NAME)