如何使用Python实现发送邮件的四种方法？

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pythonimport smtplibfrom email.mime.text import MIMETextfrom email.mime.image import MIMEImagefrom email.mime.application import MIMEApplication

importsmtplibfromemail.mime.textimportMIMETextfromemail.mime.imageimportMIMEImagefromemail

importsmtplibfrom email.mime.text importMIMETextfrom email.mime.image importMIMEImagefrom email.mime.application importMIMEApplicationfrom email.mime.multipart importMIMEMultipartclassSendEMail(object):"""封装发送邮件类"""

def __init__(self, host, port, msg_from, pwd):

self.msg_frommsg_from

self.passwordpwd#邮箱服务器地址和端口

self.smtp_s smtplib.SMTP_SSL(hosthost, portport)#发送方邮箱账号和授权码

self.smtp_s.login(usermsg_from, passwordpwd)def send_text(self, to_user, content, subject, content_typeplain):"""发送文本邮件

:param to_user: 对方邮箱

:param content: 邮件正文

:param subject: 邮件主题

:param content_type: 内容格式plain or html

:return:"""msg MIMEText(content, _subtypecontent_type, _charset"utf8")

msg["From"] self.msg_from

msg["To"] to_user

msg["subject"] subject

self.smtp_s.send_message(msg, from_addrself.msg_from, to_addrsto_user)def send_file(self, to_user, content, subject, reports_path, filename, content_typeplain):"""发送带文件的邮件

:param to_user: 对方邮箱

:param content: 邮件正文

:param subject: 邮件主题

:param reports_path: 文件路径

:param filename: 邮件中显示的文件名称

:param content_type: 内容格式"""file_content open(reports_path, "rb").read()

msgMIMEMultipart()

text_msg MIMEText(content, _subtypecontent_type, _charset"utf8")

msg.attach(text_msg)

file_msgMIMEApplication(file_content)

file_msg.add_header(content-disposition, attachment, filenamefilename)

msg.attach(file_msg)

msg["From"] self.msg_from

msg["To"] to_user

msg["subject"] subject

self.smtp_s.send_message(msg, from_addrself.msg_from, to_addrsto_user)def send_img(self, to_user, subject, content, filename, content_typehtml):发送带图片的邮件

:param to_user: 对方邮箱

:param subject: 邮件主题

:param content: 邮件正文

:param filename: 图片路径

:param content_type: 内容格式subjectsubject

msg MIMEMultipart(related)#Html正文必须包含

msg.attach(content)

msg[Subject] subject

msg[From] self.msg_from

msg[To] to_user

with open(filename,"rb") as file:

img_datafile.read()

imgMIMEImage(img_data)

img.add_header(Content-ID, imageid)

msg.attach(img)

self.smtp_s.sendmail(self.msg_from, to_user, msg.as_string())