Replace print statements by logging calls

website/members/emails.py

-from django.conf import settings
 from datetime import timedelta
+import logging
+
+from django.conf import settings
 from django.core import mail
 from django.template import loader
 from django.template.defaultfilters import floatformat
@@ -11,6 +13,9 @@ from django.utils.translation import ugettext as _
 from members.models import Member, Membership
 
 
+logger = logging.getLogger(__name__)
+
+
 def send_membership_announcement(dry_run=False):
     """
     Sends an email to all members with a never ending membership
@@ -26,8 +31,9 @@ def send_membership_announcement(dry_run=False):
 
     with mail.get_connection() as connection:
         for member in members:
-            print("Send email to {} ({})".format(member.get_full_name(),
-                                                 member.email))
+            logger.info("Sent email to %s (%s)",
+                        member.get_full_name(),
+                        member.email)
             if not dry_run:
                 with translation.override(member.profile.language):
                     email_body = loader.render_to_string(
@@ -63,8 +69,9 @@ def send_information_request(dry_run=False):
 
     with mail.get_connection() as connection:
         for member in members:
-            print("Send email to {} ({})".format(member.get_full_name(),
-                                                 member.email))
+            logger.info("Sent email to %s (%s)",
+                        member.get_full_name(),
+                        member.email)
             if not dry_run:
                 with translation.override(member.profile.language):
                     email_body = loader.render_to_string(
@@ -107,8 +114,9 @@ def send_expiration_announcement(dry_run=False):
 
     with mail.get_connection() as connection:
         for member in members:
-            print("Send email to {} ({})".format(member.get_full_name(),
-                                                 member.email))
+            logger.info("Sent email to %s (%s)",
+                        member.get_full_name(),
+                        member.email)
             if not dry_run:
                 with translation.override(member.profile.language):
                     email_body = loader.render_to_string(