我有问题理解如何使用Python电子邮件附件。我已经成功地通过smtplib电子邮件发送了简单的消息。有人能解释一下如何在电子邮件中发送附件吗?我知道网上还有其他的帖子,但作为一个Python初学者,我发现它们很难理解。
当前回答
我能找到的最简单的代码是:
#for attachment email
from django.core.mail import EmailMessage
def attachment_email(request):
email = EmailMessage(
'Hello', #subject
'Body goes here', #body
'MyEmail@MyEmail.com', #from
['SendTo@SendTo.com'], #to
['bcc@example.com'], #bcc
reply_to=['other@example.com'],
headers={'Message-ID': 'foo'},
)
email.attach_file('/my/path/file')
email.send()
它基于官方的Django文档
其他回答
这里目前给出的答案都不能正确地与GMail、Outlook 2016等客户机的文件名中的非ascii符号一起工作,以及其他不支持RFC 2231的客户机(例如,参见这里)。下面的Python 3代码改编自其他一些stackoverflow的答案(对不起,没有保存原始链接)和Python 2.7的odoo/openerp代码(参见ir_mail_server.py)。它可以正确地与GMail和其他设备一起工作,并且还使用SSL。
import smtplib, ssl
from os.path import basename
from email.mime.base import MIMEBase
from mimetypes import guess_type
from email.encoders import encode_base64
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
from email.charset import Charset
def try_coerce_ascii(string_utf8):
"""Attempts to decode the given utf8-encoded string
as ASCII after coercing it to UTF-8, then return
the confirmed 7-bit ASCII string.
If the process fails (because the string
contains non-ASCII characters) returns ``None``.
"""
try:
string_utf8.encode('ascii')
except UnicodeEncodeError:
return
return string_utf8
def encode_header_param(param_text):
"""Returns an appropriate RFC 2047 encoded representation of the given
header parameter value, suitable for direct assignation as the
param value (e.g. via Message.set_param() or Message.add_header())
RFC 2822 assumes that headers contain only 7-bit characters,
so we ensure it is the case, using RFC 2047 encoding when needed.
:param param_text: unicode or utf-8 encoded string with header value
:rtype: string
:return: if ``param_text`` represents a plain ASCII string,
return the same 7-bit string, otherwise returns an
ASCII string containing the RFC2047 encoded text.
"""
if not param_text: return ""
param_text_ascii = try_coerce_ascii(param_text)
return param_text_ascii if param_text_ascii\
else Charset('utf8').header_encode(param_text)
smtp_server = '<someserver.com>'
smtp_port = 465 # Default port for SSL
sender_email = '<sender_email@some.com>'
sender_password = '<PASSWORD>'
receiver_emails = ['<receiver_email_1@some.com>', '<receiver_email_2@some.com>']
subject = 'Test message'
message = """\
Hello! This is a test message with attachments.
This message is sent from Python."""
files = ['<path1>/файл1.pdf', '<path2>/файл2.png']
# Create a secure SSL context
context = ssl.create_default_context()
msg = MIMEMultipart()
msg['From'] = sender_email
msg['To'] = COMMASPACE.join(receiver_emails)
msg['Date'] = formatdate(localtime=True)
msg['Subject'] = subject
msg.attach(MIMEText(message))
for f in files:
mimetype, _ = guess_type(f)
mimetype = mimetype.split('/', 1)
with open(f, "rb") as fil:
part = MIMEBase(mimetype[0], mimetype[1])
part.set_payload(fil.read())
encode_base64(part)
filename_rfc2047 = encode_header_param(basename(f))
# The default RFC 2231 encoding of Message.add_header() works in Thunderbird but not GMail
# so we fix it by using RFC 2047 encoding for the filename instead.
part.set_param('name', filename_rfc2047)
part.add_header('Content-Disposition', 'attachment', filename=filename_rfc2047)
msg.attach(part)
with smtplib.SMTP_SSL(smtp_server, smtp_port, context=context) as server:
server.login(sender_email, sender_password)
server.sendmail(sender_email, receiver_emails, msg.as_string())
Gmail版本,使用Python 3.6(请注意,您需要更改Gmail设置,以便能够通过smtp从它发送电子邮件:
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.application import MIMEApplication
from os.path import basename
def send_mail(send_from: str, subject: str, text: str,
send_to: list, files= None):
send_to= default_address if not send_to else send_to
msg = MIMEMultipart()
msg['From'] = send_from
msg['To'] = ', '.join(send_to)
msg['Subject'] = subject
msg.attach(MIMEText(text))
for f in files or []:
with open(f, "rb") as fil:
ext = f.split('.')[-1:]
attachedfile = MIMEApplication(fil.read(), _subtype = ext)
attachedfile.add_header(
'content-disposition', 'attachment', filename=basename(f) )
msg.attach(attachedfile)
smtp = smtplib.SMTP(host="smtp.gmail.com", port= 587)
smtp.starttls()
smtp.login(username,password)
smtp.sendmail(send_from, send_to, msg.as_string())
smtp.close()
用法:
username = 'my-address@gmail.com'
password = 'top-secret'
default_address = ['my-address2@gmail.com']
send_mail(send_from= username,
subject="test",
text="text",
send_to= None,
files= # pass a list with the full filepaths here...
)
要与任何其他电子邮件提供商一起使用,只需更改smtp配置。
你也可以在你的电子邮件中指定你想要的附件类型,例如我使用pdf:
def send_email_pdf_figs(path_to_pdf, subject, message, destination, password_path=None):
## credits: http://linuxcursor.com/python-programming/06-how-to-send-pdf-ppt-attachment-with-html-body-in-python-script
from socket import gethostname
#import email
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import smtplib
import json
server = smtplib.SMTP('smtp.gmail.com', 587)
server.starttls()
with open(password_path) as f:
config = json.load(f)
server.login('me@gmail.com', config['password'])
# Craft message (obj)
msg = MIMEMultipart()
message = f'{message}\nSend from Hostname: {gethostname()}'
msg['Subject'] = subject
msg['From'] = 'me@gmail.com'
msg['To'] = destination
# Insert the text to the msg going by e-mail
msg.attach(MIMEText(message, "plain"))
# Attach the pdf to the msg going by e-mail
with open(path_to_pdf, "rb") as f:
#attach = email.mime.application.MIMEApplication(f.read(),_subtype="pdf")
attach = MIMEApplication(f.read(),_subtype="pdf")
attach.add_header('Content-Disposition','attachment',filename=str(path_to_pdf))
msg.attach(attach)
# send msg
server.send_message(msg)
灵感/信用:http://linuxcursor.com/python-programming/06-how-to-send-pdf-ppt- attachment-html -body-in-python脚本
这是另一个:
import smtplib
from os.path import basename
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
def send_mail(send_from, send_to, subject, text, files=None,
server="127.0.0.1"):
assert isinstance(send_to, list)
msg = MIMEMultipart()
msg['From'] = send_from
msg['To'] = COMMASPACE.join(send_to)
msg['Date'] = formatdate(localtime=True)
msg['Subject'] = subject
msg.attach(MIMEText(text))
for f in files or []:
with open(f, "rb") as fil:
part = MIMEApplication(
fil.read(),
Name=basename(f)
)
# After the file is closed
part['Content-Disposition'] = 'attachment; filename="%s"' % basename(f)
msg.attach(part)
smtp = smtplib.SMTP(server)
smtp.sendmail(send_from, send_to, msg.as_string())
smtp.close()
这和第一个例子差不多……但顺便来一下应该更容易些。
在让我的脚本发送通用附件时遇到了一点麻烦,但在做了一些研究和浏览了这篇文章后,我终于想出了以下几点
# to query:
import sys
import ast
from datetime import datetime
import smtplib
import mimetypes
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email import encoders
from email.message import Message
from email.mime.audio import MIMEAudio
from email.mime.base import MIMEBase
from email.mime.image import MIMEImage
from email.mime.text import MIMEText
from dotenv import load_dotenv, dotenv_values
load_dotenv() # load environment variables from .env
'''
sample .env file
# .env file
SECRET_KEY="gnhfpsjxxxxxxxx"
DOMAIN="GMAIL"
TOP_LEVEL_DOMAIN="COM"
EMAIL="CHESERExxxxxx@${DOMAIN}.${TOP_LEVEL_DOMAIN}"
TO_ADDRESS = ("cheseremxxxxx@gmail.com","cheserek@gmail.com")#didn't use this in the code but you can load recipients from here
'''
import smtplib
tls_port = 587
ssl_port = 465
smtp_server_domain_names = {'GMAIL': ('smtp.gmail.com', tls_port, ssl_port),
'OUTLOOK': ('smtp-mail.outlook.com', tls_port, ssl_port),
'YAHOO': ('smtp.mail.yahoo.com', tls_port, ssl_port),
'AT&T': ('smtp.mail.att.net', tls_port, ssl_port),
}
# todo: Ability to choose mail server provider
# auto read in from the dictionary the respective mail server address and the tls and ssl ports
class Bimail:
def __init__(self, subject, recipients):
self.subject = subject
self.recipients = recipients
self.htmlbody = ''
self.mail_username = 'will be loaded from .env file'
self.mail_password = 'loaded from .env file as well'
self.attachments = []
# Creating an smtp object
# todo: if gmail passed in use gmail's dictionary values
def setup_mail_client(self, domain_key_to_use="GMAIL",
email_servers_domains_dict=smtp_server_domain_names):
"""
:param report_pdf:
:type to_address: str
"""
smtpObj = None
encryption_status = True
config = dotenv_values(".env")
# check if the domain_key exists from within the available email-servers-domains dict file passed in
# else throw an error
# read environment file to get the Domain to be used
if f"{domain_key_to_use}" in email_servers_domains_dict.keys():
# if the key is found do the following
# 1.extract the domain,tls,ssl ports from email_servers dict for use in program
try:
values_tuple = email_servers_domains_dict.get(f"{domain_key_to_use}")
ssl_port = values_tuple[2]
tls_port = values_tuple[1]
smtp_server = values_tuple[0]
smtpObj = smtplib.SMTP(smtp_server, tls_port)
print(f"Success connect with tls on {tls_port}")
print('Awaiting for connection encryption via startttls()')
encryption_status = False
except:
print(f"Failed connection via tls on port {tls_port}")
try:
smtpObj = smtplib.SMTP_SSL(smtp_server, ssl_port)
print(f"Success connect with ssl on {ssl_port}")
encryption_status = True
except:
print(f"Failed connection via ssl on port {ssl_port}")
finally:
print("Within Finally block")
if not smtpObj:
print("Failed!!! no Internet connection")
else:
# if connection channel is unencrypted via the use of tls encrypt it
if not encryption_status:
status = smtpObj.starttls()
if status[0] == 220:
print("Successfully Encrypted tls channel")
print("Successfully Connected!!!! Requesting Login")
# Loading .env file values to config variable
#load Login Creds from ENV File
self.mail_username = f'{config.get("EMAIL")}'
self.mail_password = f'{cofig.get("SECRET_KEY")}'
status = smtpObj.login(self.mail_usernam,self.mail_password)
if status[0] == 235:
print("Successfully Authenticated User to xxx account")
success = self.send(smtpObj, f'{config.get("EMAIL")}')
if not bool(success):
print(f"Success in Sending Mail to {success}")
print("Disconnecting from Server INstance")
quit_result = smtpObj.quit()
else:
print(f"Failed to Post {success}!!!")
print(f"Quiting anyway !!!")
quit_result = smtpObj.quit()
else:
print("Application Specific Password is Required")
else:
print("World")
def send(self,smtpObj,from_address):
msg = MIMEMultipart('alternative')
msg['From'] = from_address
msg['Subject'] = self.subject
msg['To'] = ", ".join(self.recipients) # to must be array of the form ['mailsender135@gmail.com']
msg.preamble = "preamble goes here"
# check if there are attachments if yes, add them
if self.attachments:
self.attach(msg)
# add html body after attachments
msg.attach(MIMEText(self.htmlbody, 'html'))
# send
print(f"Attempting Email send to the following addresses {self.recipients}")
result = smtpObj.sendmail(from_address, self.recipients,msg.as_string())
return result
def htmladd(self, html):
self.htmlbody = self.htmlbody + '<p></p>' + html
def attach(self, msg):
for f in self.attachments:
ctype, encoding = mimetypes.guess_type(f)
if ctype is None or encoding is not None:
ctype = "application/octet-stream"
maintype, subtype = ctype.split("/", 1)
if maintype == "text":
fp = open(f)
# Note: we should handle calculating the charset
attachment = MIMEText(fp.read(), _subtype=subtype)
fp.close()
elif maintype == "image":
fp = open(f, "rb")
attachment = MIMEImage(fp.read(), _subtype=subtype)
fp.close()
elif maintype == "ppt":
fp = open(f, "rb")
attachment = MIMEApplication(fp.read(), _subtype=subtype)
fp.close()
elif maintype == "audio":
fp = open(f, "rb")
attachment = MIMEAudio(fp.read(), _subtype=subtype)
fp.close()
else:
fp = open(f, "rb")
attachment = MIMEBase(maintype, subtype)
attachment.set_payload(fp.read())
fp.close()
encoders.encode_base64(attachment)
attachment.add_header("Content-Disposition", "attachment", filename=f)
attachment.add_header('Content-ID', '<{}>'.format(f))
msg.attach(attachment)
def addattach(self, files):
self.attachments = self.attachments + files
# example below
if __name__ == '__main__':
# subject and recipients
mymail = Bimail('Sales email ' + datetime.now().strftime('%Y/%m/%d'),
['cheseremxx@gmail.com', 'tkemboxxx@gmail.com'])
# start html body. Here we add a greeting.
mymail.htmladd('Good morning, find the daily summary below.')
# Further things added to body are separated by a paragraph, so you do not need to worry about newlines for new sentences
# here we add a line of text and an html table previously stored in the variable
mymail.htmladd('Daily sales')
mymail.addattach(['htmlsalestable.xlsx'])
# another table name + table
mymail.htmladd('Daily bestsellers')
mymail.addattach(['htmlbestsellertable.xlsx'])
# add image chart title
mymail.htmladd('Weekly sales chart')
# attach image chart
mymail.addattach(['saleschartweekly.png'])
# refer to image chart in html
mymail.htmladd('<img src="cid:saleschartweekly.png"/>')
# attach another file
mymail.addattach(['MailSend.py'])
# send!
mymail.setup_mail_client( domain_key_to_use="GMAIL",email_servers_domains_dict=smtp_server_domain_names)