[Python]查询oracle导出结果至Excel并发送邮件

环境：Linux +python2.7+oracle11g

1、提前安装xlwt(excel写入操作模块)，cx_Oracle（oracle操作模块）

      cx_Oracle的安装步骤详见链接：https://segmentfault.com/a/1190000009878547

2、脚本如下：

#!/usr/bin/python
# -*- coding: utf-8 -*- 
import sys
import os
reload(sys)
sys.setdefaultencoding('utf8')
os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
import cx_Oracle
import xlwt
import datetime
import time
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.application import MIMEApplication
import os.path


filename = 'report_'+time.strftime("%Y-%m-%d")+'.xls'
out_path = '/data/shell/report_'+time.strftime("%Y-%m-%d")+'.xls'
print(out_path)

sheet01 = 'report'+time.strftime("%Y-%m-%d")
#获取发布时间与系统时间为同一个月的数据
sql01="select * from xxxxx  where to_char(publish_time,'yyyy-mm-dd')=to_char(sysdate, 'yyyy-mm-dd'); "

workbook = xlwt.Workbook(encoding = 'utf-8') # workbook是sheet赖以生存的载体。
def main(sql,sheet,sheet_name):
    conn = cx_Oracle.connect("user/passwd@ip/sid")
    cursor =conn.cursor()
    result = cursor.execute(sql)
	 
    #搜取所有结果
    results = cursor.fetchall()
    # 获取MYSQL里面的数据字段名称
    fields = cursor.description
    sheet = workbook.add_sheet(sheet_name,cell_overwrite_ok=True)
    # 写上字段信息
    for field in range(0,len(fields)):
	sheet.write(0,field,fields[field][0])
    # 获取并写入数据段信息
    row = 1
    col = 0
    for row in range(1,len(results)+1):
        for col in range(0,len(fields)):
            sheet.write(row,col,u'%s'%results[row-1][col])
    workbook.save(out_path)


_user = "xxx@qq.com"
_pwd = "passwd"
areceiver = "xxx@qq.com"  #收件人员
acc = "xxx@qq.com"   #抄送人员
   
#如名字所示Multipart就是分多个部分
msg = MIMEMultipart()
msg["Subject"] =u'【数据统计_' + time.strftime("%Y-%m-%d") + u'】'
msg["From"] = _user
msg["To"] = areceiver
msg["Cc"] = acc

def send_email():
    #---这是文字部分---
    content = '''Deal all,
附件是数'''   
    part = MIMEText(content,'plain','utf-8')
    msg.attach(part)
    #---这是附件部分---
    #xls类型附件
    file_name = '/data/shell/' + filename
    part = MIMEText(open(file_name,'rb').read(), 'base64', 'gb2312')
    part["Content-Type"] = 'application/octet-stream'
    basename = os.path.basename(file_name)
    part["Content-Disposition"] = 'attachment; filename=%s' % basename.encode('gb2312')
    msg.attach(part)
    s = smtplib.SMTP("smtp.qq.com", timeout=30)#连接smtp邮件服务器,端口默认是25
    s.login(_user, _pwd)#登陆服务器
    s.sendmail(_user, areceiver.split(',') + acc.split(','), msg.as_string())#发送邮件
    print("Email send successfully")
    s.close()
   
 
if __name__ == '__main__':  
    main(sql01,sheet01,sheet01) 
    send_email()

　　

Oracle获取当月或上个月、下个月
add_months()函数 参数 负数 代表 往前  正数 代表 往后。  

--当月
select to_char(sysdate,'yyyymm') from dual;  
--上一个月  
select to_char(add_months(trunc(sysdate),-1),'yyyymm') from dual;  
--下一个月  
select to_char(add_months(trunc(sysdate),1),'yyyymm') from dual;  

　　

相关链接：https://blog.csdn.net/u013519551/article/details/46632537

                  https://blog.csdn.net/mindmb/article/details/7898528

　　　　　https://blog.csdn.net/my2010sam/article/details/21005941