使用python群发邮件

导入包

import smtplib
from email.mime.image import MIMEImage
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart  
# 构建邮件头信息，包括发件人，接收人，标题等
import datetime
from pymysql import *
# from pyhive import hive
# from impala.dbapi import connect


import pandas as pd
import matplotlib.pyplot as plt
import matplotlib as mpl

plt.rcParams[u'font.sans-serif']=['SimHei'] #用来正常显示中文标签
plt.rcParams['axes.unicode_minus']=False #用来正常显示负号

from datetime import datetime,timedelta

邮件部分

def send_email(title, message, receivers):
    # 设置服务器所需信息
    # 163邮箱服务器地址
    # 设置服务器所需信息
    # 163邮箱服务器地址
    mail_host = 'XX.163.com'
    # 163邮箱端口号
    port = 465
    # 163用户名
    mail_user = '[email protected]'
    # 密码(部分邮箱为授权码)
    mail_pass = 'AABBCC'
    # 邮件发送方邮箱地址
    sender = '[email protected]'

    # 邮件主题：拼接当日的时间
    current_day = datetime.now().strftime('%Y%m%d')
    message['Subject'] = '每日简表_%s'%current_day

    # 发送方信息
    message['From'] = 'reporter<%s>'%sender

    # 接受方信息
    reces = ''
    for i in range(len(receivers)):
        reces = reces+',receiveer%d<%s>'%(i+1,receivers[i])
    message['To'] = reces


    # 开始发送邮件
    try:
        # 25端口，非ssl协议
        # smtpObj = smtplib.SMTP()
        # windows 可行
        # smtpObj = smtplib.SMTP_SSL()
        # linux 才可行
        smtpObj = smtplib.SMTP_SSL(host=mail_host)
        # 连接到服务器
        smtpObj.connect(mail_host, port)
        # 登录到服务器
        smtpObj.login(mail_user, mail_pass)
        # 发送
        smtpObj.sendmail(sender, receivers, message.as_string())
        # 退出
        smtpObj.quit()
        print('success')
    except smtplib.SMTPException as e:
        print("发送邮件错误:")
        print('error', e)

python从mySQL提取

cursor.description方法会将每个字段的字段名,字段类型,字段长度...等等字段的属性列出来.

image.png

https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlcursor-description.html

def executesql_mysql(sql):
    # 连接 mysql 数据库
    conn = connect(host='106.15.121.232',
                   port=3306,
                   database='datafrog05_adventure',
                   user='frogdata05',
                   password='Frogdata!123')
    cursor = conn.cursor()
    cursor.execute(sql)
    results = cursor.fetchall()
    # 返回的是list(tuple) 没有表头

    # 保存字段名字 为DF添加表头
    columns = []
    for i in range(len(cursor.description)):
        columns_name = cursor.description[i][0].split('.')[-1]
        columns.append(columns_name)


    table = pd.DataFrame(list(results))
    table.columns = columns
    cursor.close()
    conn.close()
    return table

python处理数据&画图

def get_message(test_to_html):
    # 转换时间日期为标准格式
    test_to_html['create_date'] = test_to_html['create_date'].map(lambda x: 
datetime.strptime(x,'%Y-%m-%d'))

    # 当日数据
    today_info = test_to_html[test_to_html['is_today'] == 1]
    today_info_sum = today_info[['sum_amount', 'sum_order']].sum()

    #本月数据
    tomonth_info = test_to_html[test_to_html['is_current_month'] == 1]
    tomonth_info_sum = tomonth_info[['sum_amount', 'sum_order']].sum()
    #本季数据
    toquarter_info = test_to_html[
test_to_html['is_current_quarter'] == 1]
    toquarter_info_sum = toquarter_info[['sum_amount', 'sum_order']].sum()
    #本年数据
    toyear_info = test_to_html[test_to_html['is_current_year'] == 1]
    toyear_info_sum = toyear_info[['sum_amount', 'sum_order']].sum()

    table_today = pd.DataFrame({'指标': ['销售额', '订单量'],
                                '今日': today_info_sum,
                                '当季': toquarter_info_sum,
                                '当月': tomonth_info_sum,
                                '当年': toyear_info_sum}
                               ).reset_index(drop=True)

    # picture_time = datetime.now().date() - timedelta(days=15)
    picture_time = (datetime.now().date() - 
timedelta(days=45)).strftime('%Y-%m-%d')

    picture_table = test_to_html[test_to_html['create_date'] >= 
picture_time]
    picture_table = picture_table.groupby('create_date').sum()
[['sum_amount', 
'sum_order','sum_amount_goal','sum_order_goal']]


    # plt.show()
    # 绘制图形
    x = picture_table.index
    y1 = picture_table['sum_amount']
    y2 = picture_table['sum_order']
    y3 = picture_table['sum_amount']/picture_table['sum_amount_goal']
    y4 = picture_table['sum_order']/picture_table['sum_order_goal']

    fig = plt.figure(figsize=(14, 20))
    # 划分子图
    ax1 = fig.add_subplot(411)  # 等价于fig.add_subplot(4,1,1)
    ax2 = fig.add_subplot(412)
    ax3 = fig.add_subplot(413)
    ax4 = fig.add_subplot(414)
    # 开始画图，可以使用 ax1、ax2设置相应的参数
    ax1.plot(x, y1, 'g', label='first')
    ax1.set_xlabel('时间', fontsize=15)
    ax1.set_ylabel('销售额', fontsize=15)
    ax1.set_title('过去45天销售趋势', fontsize=25, loc='left')
    ax2.plot(x, y2, 'r', label='second')
    ax2.set_xlabel('时间', fontsize=15)
    ax2.set_ylabel('订单量', fontsize=15)

    # 开始画图，可以使用 ax1、ax2设置相应的参数
    ax3.plot(x, y3, 'b', label='first')
    ax3.set_xlabel('时间', fontsize=15)
    ax3.set_ylabel('销售目标达成', fontsize=15)
    ax3.axhline(y=1, lw=2, ls="--", color="g") #添加参考线
    ax4.plot(x, y4, 'r', label='second')
    ax4.set_xlabel('时间', fontsize=15)
    ax4.set_ylabel('订单量目标达成', fontsize=15)
    ax4.axhline(y=1, lw=2, ls="--", color="g")
    plt.xticks(rotation=30)

    # x坐标增加15°倾斜
    for tick in ax1.get_xticklabels():
        tick.set_rotation(15)
    for tick in ax2.get_xticklabels():
        tick.set_rotation(15)
    for tick in ax3.get_xticklabels():
        tick.set_rotation(15)
    for tick in ax4.get_xticklabels():
        tick.set_rotation(15)


    img_file = "examples.png"
    plt.savefig(img_file)

得到html格式的表格

https://blog.csdn.net/u012111465/article/details/82713561

# 样式添加
    #  添加表内容
    df_html = table_today.to_html(escape=False, index=False)
    head = \
        """
         '''设置文档标题和其它在网页中不显示的信息'''
             //这里是元信息。里面可以定义网
页的字符格道式和写出网页的详细信息（如。作者。关键词等）
            
        
        """
    #  head和body是固定格式

    # 构造模板的附件（100）

    body = \
        """
        

        

            
            
Adventure Works Cycles 简报
        

        


        

            
            
战绩

            

                

                {df_html}

            
            

                

                

            
            

            

            

                        —— 本次报告完 ——
                    
            

        
        
        """.format(df_html=df_html)
    # body中有content的format格式

    # content = "" + head + body + ""
    content =  head + body
    html_file = open('t4.html', 'w', encoding='UTF-8', newline='')
    html_file.write(content)
    html_file.close()


    return content,img_file

运行本py文件时 执行以下内容

if __name__ == '__main__':
    sql = "SELECT * FROM dw_order_by_day_mdx "
    # sql = "show databases"
    # test_to_html = executesql_hive(sql)
    test_to_html = executesql_mysql(sql)

    print(test_to_html)

    # 获取要发送的 html 和 图片 信息
    content_html,img_file = get_message(test_to_html)


    # 目标：设置email要发送的内容，也可以直接就是 MIMEText 的内容，
    # 但是下面这样可以追加文本、html、图片等信息
    message = MIMEMultipart()
    # message = MIMEMultipart('alternative')

    # 1、添加文本内容
    # content_text = '邮件发送测试中..'
    # message.attach(MIMEText(content_text,'plain','utf-8'))

    # 2、添加 html 格式的内容
    message.attach(MIMEText(content_html,'html','utf-8'))

    # 3、添加图片信息



    with open(img_file,'rb') as f:
        img_info = f.read()
    img = MIMEImage(img_info)
    img.add_header('Content-ID', 'io')
    # body部分有io文件
    message.attach(img)


    # 最后：设置收件箱地址，可以发邮件了
    receivers = ['[email protected]','obvrou.163.com']
    # 发送邮件

    send_email('每日简报',message,receivers)

GIF.gif

• 添加图片的实现原理：
  将本地图片加入到邮件附件中:
  m_img.add_header('Content-ID', '')用来设置图片id
  然后通过邮件html文本引入图片:
  
  参见：https://blog.csdn.net/qq_38161040/article/details/90140231

添加附件等其他操作 参见：https://blog.csdn.net/qq_33472765/article/details/81022471
扩展标题add_header:
https://www.cnblogs.com/zhangxinqi/p/9113859.html
一次性多张图片发送：
https://www.jb51.net/article/167391.htm