pymysql

'''
将数据库表格导入excel
思路：
1、先连接数据库
2、传入一个表名，将数据获取到
3、写入excel
'''
import pymysql,xlwt

info={
    'host':"118.24.30.401",
    "user":'gggz',
    "password":'1khgf6',
    'port':3306,
    "db":'gggz'
}
#连接数据库，获取数据
def connect_mysql(table_name):
    conn = pymysql.connect(**info)
    cur = conn.cursor()
    try:
        cur.execute('select * from %s limit 10;'%table_name)
    except Exception as e:
        res={"error_code":0,"error_msg":e.args}
        return res
    else:
        res = list(cur.fetchall())
        #获取表头：
        fields = [field[0]  for field in cur.description] #cur.description表示获取表头字段
        res.insert(0,fields)
        cur.close()
        conn.close()
        return res

#写入excel
def  write_to_excel(table_name):
    book = xlwt.Workbook()
    sheet = book.add_sheet('sheet1')
    try:
        res = connect_mysql(table_name)
    except Exception as e:
        print('数据未获取成功')

    else:
        #处理从数据表中读取到得数据
        for index,value in enumerate(res):#先获取到每一个大得列表
            for index2 ,value2 in enumerate(value): #获取每一个小得列表的内容，真正要写入的内容，行不变，列在改变。嵌套循环
                sheet.write(index,index2,value2)

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

        print('导入成功')

if __name__ == '__main__':
    write_to_excel('app_myuser')