Refactor schedule class into its own module

Previously, the schedule class was in the meeting module with the
meeting class. This change pulls schedule into its own module. This will
be easier for unit testing and will make it is easier for us to change
in the future if we want to incorporate the schedule class purpose into
the meeting object.

Change-Id: I3f03c2167997b39fadd362bd66a35cae570503ef

arbiter/meeting.py

@@ -23,7 +23,8 @@ import icalendar
 import pytz
 import yaml
 
-import const
+from arbiter import const
+from arbiter import schedule
 
 
 class Meeting:
@@ -41,7 +42,10 @@ class Meeting:
         self.agenda = yaml['agenda']  # this is a list of list of topics
 
         # create schedule objects
-        self.schedules = [Schedule(schedule) for schedule in yaml['schedule']]
+        self.schedules = []
+        for sch in yaml['schedule']:
+            s = schedule.Schedule(sch)
+            self.schedules.append(s)
 
     def write_ical(self, ical_dir):
         """Write this meeting to disk using the iCal format."""
@@ -129,18 +133,6 @@ class Meeting:
         return meetings
 
 
-class Schedule:
-    """A meeting schedule."""
-
-    def __init__(self, sched_yaml):
-        """Initialize schedule from yaml."""
-
-        self.time = datetime.datetime.strptime(sched_yaml['time'], '%H%M')
-        self.day = sched_yaml['day']
-        self.irc = sched_yaml['irc']
-        self.freq = sched_yaml['frequency']
-
-
 def next_weekday(ref_date, weekday):
     """Return the date of the next weekday after ref_date."""
 

arbiter/schedule.py

@@ -0,0 +1,30 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+#    Copyright 2014 OpenStack Foundation
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import datetime
+
+
+class Schedule:
+    """A meeting schedule."""
+
+    def __init__(self, sched_yaml):
+        """Initialize schedule from yaml."""
+
+        self.time = datetime.datetime.strptime(sched_yaml['time'], '%H%M')
+        self.day = sched_yaml['day']
+        self.irc = sched_yaml['irc']
+        self.freq = sched_yaml['frequency']