Scrapy – 发送电子邮件

先决条件： Scrapy

Scrapy提供了自己的发送电子邮件的工具，非常好用，它是使用 Twisted 非阻塞 IO 实现的，以避免干扰爬虫的非阻塞 IO。本文讨论如何使用scrapy 发送邮件。

对于这个 MailSender 类需要从scrapy 导入，然后需要调用具有正确参数的专用函数才能成功发送邮件。

使用的功能

MailSender() 用于设置邮件程序。

Syntax:

classscrapy.mail.MailSender(smtphost=None, mailfrom=None, smtpuser=None, smtppass=None, smtpport=None)

Parameters

smtphost (str or bytes) – the SMTP host to use for sending the emails.
mailfrom (str) – the address used to send emails (in the From: header).
smtpuser – the SMTP user. If omitted, the MAIL_USER setting will be used. If not given, no SMTP authentication is going to be performed..
smtppass (str or bytes) – the SMTP pass for authentication.
smtpport (int) – the SMTP port to connect to
smtptls (bool) – enforce using SMTP STARTTLS
smtpssl (bool) – enforce employing a secure SSL connection

编程需要懂一点英语

classmethodfrom_settings() 实例化一个 Scrapy 设置对象，它可以尊重这些 Scrapy 设置。

Syntax:

classmethodfrom_settings(settings)

Parameters

settings (scrapy.settings.Settings object) – the e-mail recipients

编程需要懂一点英语

send() 向给定的收件人发送电子邮件。

Syntax:

send(to, subject, body, cc=None, attachs=(), mimetype=’text/plain’, charset=None)

Parameters

to (str or list) –the e-mail recipients as a string or as an inventory of string
subject (str) – the subject of the e-mail
cc (str or list) – the e-mails to CC as a string or as an inventory of strings
body (str) – the e-mail body
attachs (collections.abc.Iterable) – an iterable of tuples (attach_name, mimetype, file_object) where attach_name is a string with the name that will appear on the e-mail’s attachment, mimetype is the mimetype of the attachment and file_object may be a readable file object with the contents of the attachment
charset (str) – the character encoding to use for the e-mail contents

编程需要懂一点英语

方法

导入模块
设置邮件程序
添加邮件的主题和正文
提供发送者和接收者的电子邮件地址
发邮件

例子：

Python3

# import module
from scrapy.mail import MailSender
  
# setup mailer
mailer = MailSender(mailfrom="Something@gmail.com",
                    smtphost="smtp.gmail.com", smtpport=465, smtppass="MySecretPassword")
  
# send mail
mailer.send(to=["abc@gmail.com"], subject="Scrapy Mail",
            body="Hi ! GeeksForGeeks", cc=["another@example.com"])

输出：