剛入門python，發現確實是一個不錯的語言。

業務部門要求將將某一個數據庫中的表，定期發送到相關部門人員郵箱。

其實整個業務需求很簡單，實現起來也不難。

但是由于剛入門python，所以還是借鑒了不上網上的內容，也得到了許多群友的提醒。

業務部門使用的是Postgresql數據庫，所以使用 了psyconpg2的模塊。

整個腳本分為三部分：

1.數據庫的連接及數據寫入excel表中（整個對新手來說，應該是難點）

2.郵件的發送

3.生成excel文件的刪除

# coding: utf-8

import sys

import xlwt

import psycopg2

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

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# 連接數據庫的參數：主機，用戶，密碼，端口及數據庫名稱

host = '192.168.1.77'

user = 'postgres'

pwd = 'postgres'

port = 5432

db = 'pytest'

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sheet_name = 'report' + time.strftime("%Y-%m-%d")

filename = 'report_' + time.strftime("%Y-%m-%d" + "-" + "%H%M%S") + '.xls'

out_path = "d:/test/report_" + time.strftime("%Y-%m-%d" + "-" + "%H%M%S") + ".xls"? # 路徑文件名使用日期時間來命名，但是文件命名不支持冒號：所以去掉冒號

cur_path = 'd:/test'

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print(out_path)

sql = 'select * from website;'

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def export():

??? # 數據庫連接

??? conn = psycopg2.connect(dbname=db, user=user, password=pwd, host=host, port=port)

??? cursor = conn.cursor()

??? cursor.execute(sql)

??? result = cursor.fetchall()

??? count = cursor.rowcount

??? print("Select? " + str(count) + "? Records")

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??? # cursor.scroll(0, mode='relative')

??? fields = cursor.description??? # 數據表的標題

??? workbook = xlwt.Workbook(encoding='utf-8')????????? # 創建excel文檔

??? sheet = workbook.add_sheet(sheet_name, cell_overwrite_ok=True)? # 根據sheet_name 創建excel文檔的sheet

?? ?for field in range(1, len(fields)):????? # 寫入數據表的文件頭

??????? sheet.write(0, field, fields[field][0])

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??? # 逐行逐列的添加數據

??? for row in range(1, len(result) + 1):

??????? for col in range(0, len(fields)):

??????????? sheet.write(row, col, u'%s'%result[row-1][col])

??? workbook.save(out_path)??? # 按照out_path的格式和路徑保存excel表格

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_user = "user1@abc.com"

_pwd = "123456."

areceiver = "user2@163.com"

acc = "user1@abc.com"

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# 如名字所示Multipart就是多個部分

msg = MIMEMultipart()

msg["Subject"] = u'[Data Select_' + time.strftime("%Y-%m-%d") + u']'

msg["From"] = _user

msg["To"] = areceiver

msg["Cc"] = acc

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def send_email():

??? conn = psycopg2.connect(dbname=db, user=user, password=pwd, host=host, port=port)

??? cursor = conn.cursor()

??? cursor.execute(sql)

??? cursor.fetchall()

??? count = cursor.rowcount?? # summary rows number

??? # ----這是文字部分-----

??? content = '''Dear All, \n 附件是每日統計情況，請查收！

??? 總計結果數位：''' + str(count)

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??? part = MIMEText(content, 'plain', 'utf-8')

??? msg.attach(part)

??? if count > 0:

??????? # 這是附件部分

??????? # xls類型附件

??????? file_name = 'd:/test/' + 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('utf-8')

??????? part['Content-Disposition'] = 'attachment; filename=%s' % basename

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??????? # part.add_header('Content-Disposition', 'attachment', filename=('utf-8', basename))

??????? msg.attach(part)

??????? s = smtplib.SMTP('mail.ucinbox.com', timeout=120)? # 連接smtp郵件服務器

??????? s.login(_user, _pwd)

??????? s.sendmail(_user, areceiver.split(',') + acc.split(','), msg.as_string())? # send mail

??????? print("Email send successfully")

??????? s.close()

??? else:

??????? print("nothing to send!")

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# 刪除生成的excel文件

# 之前使用的是將不同的excel放入不同的文件夾，所以寫了遍歷刪除所有excel

def delete(path):

??? ls = os.listdir(cur_path)

??? for l in ls:

??????? path_file = os.path.join(path,l)? # 取文件路徑

??????? if os.path.isfile(path_file):

??????????? os.remove(path_file)

??????? else:

??????????? for f in os.listdir(path_file):

??????????????? path_file2 = os.path.join(path_file,f)

??????????????? if os.path.isfile(path_file2):

??????????????????? os.remove(path_file2)

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?? ?# 調用函數

if __name__ == "__main__":

??????? export()

??????? send_email()

??????? delete(cur_path)

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