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='123456',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')