Python uses the openpyxl operating module to read excel and append data to the original table

Recently wrote a reptile, climb down the data into Excel, most started using xlwt and xlrd these two modules with the use of Excel to create and write and append operation, but there is a downside is the data about more than 65,000 of the error will

Error:  

ValueError: row index was 65536, not allowed by .xls format

Solution:
       xlrd and xlwt deal with xls files. The maximum number of lines in a single sheet is 65535. If there is a larger need, it is recommended to use the openpyxl function. The maximum number of lines reaches 1048576.
       If the amount of data exceeds 65535, you will encounter: ValueError: row index was 65536, not allowed by .xls format

So I have to use the openpyxl module, it is recommended, because I feel that the font is more beautiful, and the performance seems to be improved. 

1: Install openpyxl 

pip install openpyxl

2: Write operation

#openpyxl写数据
import openpyxl     #导入openpyxl模块
wb = openpyxl.Workbook()   #创建空的Excel文件
sheet = wb.active         #获取工作簿的活动表，通常是第一个工作表
sheet.title = '高管'     #给工作表命名

#这个可以理解是表头
sheet['A1'] = '公司名称'
sheet['B1'] = '姓名'
sheet['C1'] = '职务'
sheet['D1'] = '学历'
sheet['E1'] = '薪酬'
sheet['F1'] = '持股'
sheet['G1'] = '年龄'
sheet['H1'] = '任期'           

#单行数据的写入
row = ['写入','读取','模块']      #创建一个列表用以批量写入
sheet.append(row)      #append将数据写入单元格中

#多行数据的写入，以列表进行分开，最后写入大列表
rows = [['写入','读取','模块'],['怪物','格格不入','同类', '经典','人物']]
for i in rows:
    sheet.append(i)          #遍历rows，同时把遍历的内容添加到表格里，这样就实现了多行写入。
wb.save('高管.xlsx')            #保存新建的Excel文件，并命名为“测试.xlsx”

3: Existing excel sheet to append data

# 导入模块
import openpyxl
# 已存在的Excel文件的路径，根据需要修改路径
filepath = '高管.xlsx'
wb = openpyxl.load_workbook(filepath)
ws = wb['高管']
# 创建文件的时候title名字  sheet.title = '高管' 必须要对应，忘记了请看上面
# 或者你还可以 print(wb.sheetnames) 把所有子表的名字并打印出来
ws = wb['sheet2']
#待填充数据
data = [[1,2,3],[4,5,6]]
for x in data:
    ws.append(x)
savename = 'update_excel.xlsx'  #保存路径你可以写新路径，当然也可以写创建文件的路径，数据会追加进去
wb.save(savename)