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

 1 import pymysql,xlwt
 2 def export_excel(table_name):
 3     coon =pymysql.connect(
 4         user='xxx',passwd='123456',host='xxx.xxx.xxx.xxx',port=3306,
 5         db='xxx',charset='utf8'
 6     )
 7     cur = coon.cursor()
 8     sql = 'select * from %s;'%table_name
 9     cur.execute(sql)  #执行sql
10     fileds = [filed[0] for filed in cur.description]  #所有的字段
11     all_data = cur.fetchall()
12 
13     book = xlwt.Workbook()
14     sheet = book.add_sheet('sheet1')
15     # col = 0
16     # for filed in fileds:
17     #     sheet.write(0,col,filed)
18     #     col+=1
19     for col,filed in enumerate(fileds):   #写表头的，
20         sheet.write(0,col,filed)   #这两行代码等同于上面四行代码
21 
22     # print(all_data)
23     row = 1   #第一行
24     for data in all_data:  #行
25         for col,filed in enumerate(data):   #控制列
26             sheet.write(row,col,filed)
27         row+=1 #每次写完一行，行数加一
28 
29     book.save('%s.xls'%table_name)
30 
31 export_excel('app_student')