Python小练习_数据库表数据导出到excel

需求：只要传入一个表名，就能把所有的数据导入出来，字段名是excel的表头

1.要动态获取到标的字段 cur.descrption能获取到表的字段

fileds = [filed[0] for filed in cur.description]

下图可以获取表结构，并取出表头

2.获取数据   select * from %s;%table_name

3.导出到excel

 import pymysql,xlwt
 def export_excel(table_name):
     coon =pymysql.connect(
         user='xxx',passwd='',host='xxx.xxx.xxx.xxx',port=3306,
         db='xxx',charset='utf8'
     )
     cur = coon.cursor()
     sql = 'select * from %s;'%table_name
     cur.execute(sql)  #执行sql
     fileds = [filed[0] for filed in cur.description]  #所有的字段
     all_data = cur.fetchall()

     book = xlwt.Workbook()
     sheet = book.add_sheet('sheet1')
     # col = 0
     # for filed in fileds:
     #     sheet.write(0,col,filed)
     #     col+=1
     for col,filed in enumerate(fileds):   #写表头的，
         sheet.write(0,col,filed)   #这两行代码等同于上面四行代码

     # print(all_data)
     row = 1   #第一行
     for data in all_data:  #行
         for col,filed in enumerate(data):   #控制列
             sheet.write(row,col,filed)
         row+=1 #每次写完一行，行数加一

     book.save('%s.xls'%table_name)

 export_excel('app_student')