我們有個政府專案，程式碼和資料庫都在政府那邊，我就開了一個後門，每天定時將資料庫資料發到我們這邊來，然後定時把這個檔案再刪除掉，在中秋這一天專案經理給我打電話問我說資料庫資料的情況，並且讓我們這邊一個開發人員幫忙統計增量是多少，我就萌生了一個想發，過節都不讓人過好，還想著公司的事情，於是自己就打算寫一個功能，將資料統計出來，然後呼叫郵件伺服器傳送給專案經理
我是運維出身，python都是自學的，好多東西寫的不是很規範，但是功能已經實現了，指令碼內容如下：

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import pymysql,time
import xlwt
import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr
from email.mime.multipart import MIMEMultipart
from email.header import Header

src="/home/email/data"

class writeExcel(object):
    '''將資料庫資料寫入到excel中'''
    def __init__(self):
        self.workbook = xlwt.Workbook()
    def writefile(self,data,field):  #data為查查詢結果,field為工作簿名
        sheet = self.workbook.add_sheet(field, cell_overwrite_ok=True)
        for field in range(0, len(fields)):
            sheet.write(0, field, fields[field][0])

        # 獲取並寫入資料段資訊
        row = 1
        col = 0
        for row in range(1, len(data) + 1):
            for col in range(0, len(fields)):
                sheet.write(row, col, u'%s' % data[row - 1][col])

    def savaDate(self):
        self.workbook.save(r'%s/%s.xlsx' %(src,time.strftime('%Y%m%d')))


def email(email_list,content,subject="企業資料%s" %time.strftime('%Y%m%d')):
    '''郵件伺服器'''
    msg = MIMEMultipart()   #建立一個帶有附件的例項
    msg['From'] = formataddr(["冠通新創", '
 
[email protected]'])    #發件人顯示的名稱和地址
    msg['Subject'] = Header(subject, 'utf-8')
    msg.attach(MIMEText(content,'plain','utf-8'))   #傳送主體

    # 構造附件
    att1 = MIMEText(open('%s/%s.xlsx' % (src,time.strftime('%Y%m%d')), 'rb').read(), 'base64', 'utf-8')
    att1["Content-Type"] = 'application/octet-stream'
    att1["Content-Disposition"] = 'attachment; filename="%s.xlsx"' %time.strftime('%Y%m%d')
    msg.attach(att1)

    #SMTP服務區
    server = smtplib.SMTP("smtp.qiye.163.com",25)   #網易雲的smtp伺服器
    server.login('
 
[email protected]','1234567890')    #登陸網易雲的企業郵箱和密碼
    server.sendmail('[email protected]',email_list,msg.as_string())
    server.quit()

#資料庫連線資訊
PY_MYSQL_CONN_DICT = {
    "host": '127.0.0.1',
    "port": 3306,
    "user": 'root',
    "passwd": '1234567890',
    "db": 'food-user',
    "charset": 'utf8'
}
conn = pymysql.connect(**PY_MYSQL_CONN_DICT) #連線資料庫
cursor = conn.cursor()                       #建立遊標

sqlOne="""
select DISTINCT a.companyname,c.username from `food-user`.companyinfo a
  INNER JOIN `product-company`.supplier b on a.id = b.company_id
  INNER JOIN `food-user`.`food_user` c on a.id = c.company_id 
  where a.id not in (select companyid from `food-user`.testCompanyId)
  ORDER BY c.username asc
"""

sqlTwo="""
select DISTINCT a.companyname,c.username from `food-user`.companyinfo a
  INNER JOIN `currency-company`.supplier b on a.id=b.company_id
  INNER JOIN `food-user`.`food_user` c on a.id = c.company_id
  where a.id not in (select companyid from `food-user`.testCompanyId)
  ORDER BY c.username asc;
"""

sqlThree="""
select DISTINCT a.companyname,c.username from `food-user`.companyinfo a
  INNER JOIN `restaurant_company`.supplier b on a.id=b.companyid
  INNER JOIN `food-user`.`food_user` c on a.id = c.company_id
  where a.id not in (select companyid from `food-user`.testCompanyId)
  ORDER BY c.username asc;
"""
cursor.execute(sqlOne)
results = cursor.fetchall()

cursor.execute(sqlTwo)
results2=cursor.fetchall()

cursor.execute(sqlThree)
results3=cursor.fetchall()

# 獲取MYSQL裡面的資料欄位名稱
fields = cursor.description

#將資料寫入到excel中
obj = writeExcel()
obj.writefile(results,'product')
obj.writefile(results2,'currency')
obj.writefile(results3,'restaurant')
obj.savaDate()

conn.commit()
cursor.close()
conn.close()

#傳送郵件
email(['
 
[email protected]'],'企業資料%s' %time.strftime('%Y%m%d'))