# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1431881598 -7200
# Node ID 9878dc6132889bedaabcde545829b0be0be2883f
# Parent  1ffecd8445e9425b2f1e9ee866b63660e61f5108
Tidied imports and fixed get_tzid availability.

diff -r 1ffecd8445e9 -r 9878dc613288 imiptools/data.py
--- a/imiptools/data.py	Sun May 17 18:47:06 2015 +0200
+++ b/imiptools/data.py	Sun May 17 18:53:18 2015 +0200
@@ -23,7 +23,7 @@
 from datetime import datetime, timedelta
 from email.mime.text import MIMEText
 from imiptools.dates import format_datetime, get_datetime, get_duration, \
-                            get_freebusy_period, get_period, \
+                            get_freebusy_period, get_period, get_tzid, \
                             to_timezone, to_utc_datetime
 from imiptools.period import Period, RecurringPeriod, period_overlaps
 from vCalendar import iterwrite, parse, ParseError, to_dict, to_node
@@ -403,9 +403,6 @@
 def get_window_end(tzid, window_size=100):
     return to_timezone(datetime.now(), tzid) + timedelta(window_size)
 
-def get_tzid(dtstart_attr, dtend_attr):
-    return dtstart_attr.get("TZID") or dtend_attr.get("TZID")
-
 def get_periods(obj, tzid, window_end, inclusive=False):
 
     """
diff -r 1ffecd8445e9 -r 9878dc613288 imiptools/dates.py
--- a/imiptools/dates.py	Sun May 17 18:47:06 2015 +0200
+++ b/imiptools/dates.py	Sun May 17 18:53:18 2015 +0200
@@ -143,6 +143,15 @@
     else:
         return None
 
+def get_tzid(dtstart_attr, dtend_attr):
+
+    """
+    Return any time regime details from the given 'dtstart_attr' and
+    'dtend_attr' attribute collections.
+    """
+
+    return dtstart_attr.get("TZID") or dtend_attr.get("TZID")
+
 def get_datetime_attributes(dt, tzid=None):
 
     "Return attributes for 'dt' and 'tzid'."
diff -r 1ffecd8445e9 -r 9878dc613288 imiptools/period.py
--- a/imiptools/period.py	Sun May 17 18:47:06 2015 +0200
+++ b/imiptools/period.py	Sun May 17 18:53:18 2015 +0200
@@ -22,8 +22,8 @@
 from bisect import bisect_left, bisect_right, insort_left
 from datetime import date, datetime, timedelta
 from imiptools.dates import format_datetime, get_datetime, \
-                            get_datetime_attributes, \
-                            get_start_of_day, to_timezone, to_utc_datetime
+                            get_datetime_attributes, get_start_of_day, \
+                            get_tzid, to_timezone, to_utc_datetime
 
 class Period:
 
diff -r 1ffecd8445e9 -r 9878dc613288 imipweb/event.py
--- a/imipweb/event.py	Sun May 17 18:47:06 2015 +0200
+++ b/imipweb/event.py	Sun May 17 18:53:18 2015 +0200
@@ -19,13 +19,11 @@
 this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from datetime import date, datetime, timedelta
+from datetime import date, timedelta
 from imiptools.client import update_attendees, update_participation
 from imiptools.data import get_uri, uri_dict, uri_values
-from imiptools.dates import end_date_from_calendar, format_datetime, \
-                            get_datetime, get_datetime_item, get_period_item, \
-                            to_date, to_datetime, \
-                            to_recurrence_start, to_timezone, to_utc_datetime
+from imiptools.dates import format_datetime, get_datetime, get_datetime_item, \
+                            get_period_item, to_date, to_datetime, to_timezone
 from imiptools.mail import Messenger
 from imiptools.period import have_conflict
 from imipweb.data import EventPeriod, \