Moin,
ich wollte mit Python regelmäßig E-Mails versenden an die jeweils eine kleine Excel Tabelle angehängt ist. Ich benutze dafür ein Gmail Konto. Es funktioniert auf jeden Fall solange ich keine Datei anhänge.
Diese Zeilen sind fehlerhaft:
SendMail.prepareMail(…)
und
part.set_payload(os.open(file), „rb“).read()) -> hier ist der Fehlercode "IsADirectoryError: [Errno 21] Is a directory: ‚/‘
Ich hoffe ihr könnt mir dabei helfen 
import sys, smtplib, os
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email.mime.text import MIMEText
from email.utils import formatdate
from email import encoders
class SendMail(object):
mailadress = '[email protected]'
smtpserver = 'smtp.googlemail.com'
username = 'xxx'
password = 'xxx'
def send(self, files):
# Gather information, prepare mail
to = self.mailadress
From = self.mailadress
#Subject contains preview of filenames
if len(files) <= 3: subjAdd = ','.join(files)
if len(files) > 3: subjAdd = ','.join(files[:3]) + '...'
subject = 'Dateiupload: ' + subjAdd
msg = self.prepareMail(From, to, subject, files)
#Connect to server and send mail
server = smtplib.SMTP(self.smtpserver)
server.ehlo() #Has something to do with sending information
server.starttls() # Use encrypted SSL mode
server.ehlo() # To make starttls work
server.login(self.username, self.password)
failed = server.sendmail(From, to, msg.as_string())
server.quit()
def prepareMail(self, From, to, subject, attachments):
msg = MIMEMultipart()
msg['From'] = From
msg['To'] = to
msg['Date'] = formatdate(localtime=True)
msg['Subject'] = subject
# The Body message is empty
msg.attach( MIMEText("") )
for file in attachments:
#We could check for mimetypes here, but I'm too lazy
part = MIMEBase('application', "octet-stream")
part.set_payload( open(os.open(file),"rb").read() )
Encoders.encode_base64(part)
part.add_header('Content-Disposition', 'attachment; filename="%s"' % os.path.basename(file))
msg.attach(part)
#Delete created Tar
return msg
if __name__ == '__main__':
mymail = SendMail()
# Send all files included in command line arguments
mymail.send(sys.argv[1:])
SendMail.prepareMail("[email protected]", "[email protected]", "[email protected]", "Titel 1", "/home/pi/Desktop/Teststand/export/protokoll/Protokoll04_May_2020.xlsx")