次のプログラムを改造して、添付ファイル付きのメールを送るようにしました。
Gmail の oauth2 でメールの送信 (python3)
まず、credentials.json を取得します。
get_credentials.py
#
# get_credentials.py
#
# Jan/03/2019
# ------------------------------------------------------------------
import httplib2
import os
import sys
import oauth2client
import argparse
from oauth2client import file, client, tools
# ------------------------------------------------------------------
SCOPES = "https://www.googleapis.com/auth/gmail.send"
CLIENT_SECRET_FILE = "credentials.json"
APPLICATION_NAME = "MyGmailSender"
# ------------------------------------------------------------------
# [6-4]:
def get_credentials_proc(flags):
script_dir =os.path.abspath(os.path.dirname(__file__))
credential_dir = os.path.join(script_dir, ".credentials")
if not os.path.exists(credential_dir):
os.makedirs(credential_dir)
credential_path = os.path.join(credential_dir,"my-gmail-sender.json")
store = oauth2client.file.Storage(credential_path)
credentials = store.get()
if not credentials or credentials.invalid:
flow = oauth2client.client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
flow.user_agent = APPLICATION_NAME
credentials = oauth2client.tools.run_flow(flow,store,flags)
print("Storing credentials to " + credential_path)
#
return credentials
#
# ------------------------------------------------------------------
gmail_attachement.py
#
# gmail_attachement.py
#
# Jan/03/2019
# ------------------------------------------------------------------
import httplib2
import os
import sys
import apiclient
from get_credentials import get_credentials_proc
# ------------------------------------------------------------------
import base64
from email.mime.multipart import MIMEMultipart
from email.utils import formatdate
from email.mime.base import MIMEBase
import traceback
from email.message import EmailMessage
import imghdr
# ------------------------------------------------------------------
# [6-8-4]:
def attach_image_proc(message,img_data,filename):
try:
message.add_attachment(img_data,maintype='image',
subtype=imghdr.what(None,img_data),filename=filename)
except Exception as ee:
sys.stderr.write("*** error *** in message.add_attachment ***\n")
sys.stderr.write(str(ee) + "\n")
#
return message
# ------------------------------------------------------------------
# [6-8-6]:
def attach_application_proc(message,data_attach,filename,subtype):
try:
message.add_attachment(data_attach,maintype='application',
subtype=subtype,filename=filename)
except Exception as ee:
sys.stderr.write("*** error *** in message.add_attachment ***\n")
sys.stderr.write(str(ee) + "\n")
#
return message
# ------------------------------------------------------------------
# [6-8]:
def create_message(mail_from,mail_to,subject,str_message,file_attach):
message = EmailMessage()
message.set_content(str_message)
#
message["From"] = mail_from
message["To"] = mail_to
message["Subject"] = subject
message["Date"] = formatdate(localtime=True)
#
fp = open(file_attach,'rb')
img_data = fp.read()
fp.close()
#
for suffix in [".pdf",".csv",".json",".xlsx",".zip"]:
if (file_attach.endswith(suffix)):
message = attach_application_proc \
(message,img_data,file_attach,suffix)
#
for suffix in [".jpg",".png"]:
if (file_attach.endswith(suffix)):
message = attach_image_proc \
(message,img_data,file_attach)
#
byte_msg = message.as_string().encode(encoding="UTF-8")
byte_msg_b64encoded = base64.urlsafe_b64encode(byte_msg)
str_msg_b64encoded = byte_msg_b64encoded.decode(encoding="UTF-8")
return {"raw": str_msg_b64encoded}
#
# ------------------------------------------------------------------
# [6]:
def gmail_attachement_proc(mail_from,mail_to,subject,str_message,file_attach,flags):
credentials = get_credentials_proc(flags)
http = credentials.authorize(httplib2.Http())
service = apiclient.discovery.build("gmail", "v1", http=http)
#
try:
result = service.users().messages().send(
userId=mail_from,
body=create_message(mail_from,mail_to,subject,str_message,file_attach)
).execute()
print("Message Id: {}".format(result["id"]))
except apiclient.errors.HttpError:
print("------start trace------")
traceback.print_exc()
print("------end trace------")
#
# ------------------------------------------------------------------
mail_from は credentials.json を作成したユーザーにして下さい。
mail_to は送信先です。
file_attach は添付ファイルの名前です。
test_gmail.py
#! /usr/bin/python
#
# test_gmail.py
#
# Jan/03/2019
# ------------------------------------------------------------------
import sys
import argparse
import oauth2client
from gmail_attachement import gmail_attachement_proc
flags = argparse.ArgumentParser(
parents=[oauth2client.tools.argparser]
).parse_args()
# ------------------------------------------------------------------
sys.stderr.write("*** 開始 ***\n")
#
mail_from = "example01@gmail.com"
mail_to = "user01@example.or.jp"
#
subject = "Gmail Api Test Jan/03/2019 PM 20:45"
str_message = ""
str_message += "こんにちは。\n"
str_message += "Jan/03/2019 PM 20:45\n"
#
file_attach = "federer.png"
file_attach = "in01.csv"
file_attach = "example01.pdf"
file_attach = "federer.jpg"
#
sys.stderr.write("file_attach = " + file_attach + "\n")
#
gmail_attachement_proc(mail_from,mail_to,subject,str_message,file_attach,flags)
#
sys.stderr.write("*** 終了 ***\n")
# ------------------------------------------------------------------
実行方法
./test_gmail.py
リモートのサーバーのコンソールで最初に実行する時は
./test_gmail.py --noauth_local_webserver
次のバージョンで確認しました。
$ python --version
Python 3.8.2