Fixed string positional arguments to fix 2.6.

Author: stevemac007

.travis.yml

@@ -7,7 +7,7 @@ python:
 #  - "3.4"
 #  - "3.5"
 #  - "3.5-dev" # 3.5 development branch
-#  - "3.6"
+  - "3.6"
 #  - "3.6-dev" # 3.6 development branch
 #  - "3.7-dev" # 3.7 development branch
 #  - "nightly" # currently points to 3.7-dev

lambda/backuplambda.py

@@ -110,11 +110,11 @@ def process_backup(self):
                     else:
                         print('  Skipping other backup schedule: ' + sndesc)
 
-                self.message += "\n    Current backups in rotation (keeping {})\n".format(self.keep_count)
+                self.message += "\n    Current backups in rotation (keeping {0})\n".format(self.keep_count)
                 self.message += "    ---------------------------\n"
 
                 for snap in deletelist:
-                    self.message += "    {} - {}\n".format(self.resolve_snapshot_name(snap),
+                    self.message += "    {0} - {1}\n".format(self.resolve_snapshot_name(snap),
                                                            self.resolve_snapshot_time(snap))
                 self.message += "    ---------------------------\n"
 
@@ -376,7 +376,7 @@ def build_arn_for_id(self, instance_id):
         region = self.conn.meta.region_name
         account_number = self.resolve_account_number()
 
-        return "arn:aws:rds:{}:{}:db:{}".format(region, account_number, instance_id)
+        return "arn:aws:rds:{0}:{1}:db:{2}".format(region, account_number, instance_id)
 
 
 def lambda_handler(event, context={}):