fix envoi mail etud change

app/scodoc/sco_etud.py

@@ -31,27 +31,21 @@
 # Ancien module "scolars"
 import os
 import time
-
-from flask import url_for, g, request
-
-from email.mime.multipart import MIMEMultipart
-from email.mime.text import MIMEText
-from email.header import Header
-from email.mime.base import MIMEBase
 from operator import itemgetter
 
+from flask import url_for, g, request
+from flask_mail import Message
+
+from app import email
+from app import log
+
 import app.scodoc.sco_utils as scu
-from app.scodoc.sco_utils import SCO_ENCODING
 import app.scodoc.notesdb as ndb
 from app.scodoc.sco_exceptions import ScoGenError, ScoValueError
-
-from app import log
-from app.scodoc.TrivialFormulator import TrivialFormulator
 from app.scodoc import safehtml
 from app.scodoc import sco_preferences
 from app.scodoc.scolog import logdb
-from flask_mail import Message
-from app import mail
+from app.scodoc.TrivialFormulator import TrivialFormulator
 
 MONTH_NAMES_ABBREV = [
     "Jan ",
@@ -456,7 +450,7 @@ def notify_etud_change(email_addr, etud, before, after, subject):
     log("notify_etud_change: sending notification to %s" % email_addr)
     log("notify_etud_change: subject: %s" % subject)
     log(txt)
-    mail.send_email(
+    email.send_email(
         subject, sco_preferences.get_preference("email_from_addr"), [email_addr], txt
     )
     return txt