# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1438446272 -7200
# Node ID afeefc78e8eaf233919a84cdaffec72aaf23cac0
# Parent  23f998c9dacd6c185e71b579f9c3ebcfcf212be5
Added missing import plus a comment.

diff -r 23f998c9dacd -r afeefc78e8ea imiptools/data.py
--- a/imiptools/data.py	Sat Aug 01 01:35:03 2015 +0200
+++ b/imiptools/data.py	Sat Aug 01 18:24:32 2015 +0200
@@ -25,7 +25,7 @@
 from imiptools.dates import format_datetime, get_datetime, \
                             get_datetime_item as get_item_from_datetime, \
                             get_datetime_tzid, \
-                            get_duration, get_period, \
+                            get_duration, get_period, get_period_item, \
                             get_recurrence_start_point, \
                             get_tzid, to_datetime, to_timezone, to_utc_datetime
 from imiptools.period import Period, RecurringPeriod, period_overlaps
@@ -65,6 +65,9 @@
         if not self.has_key("RECURRENCE-ID"):
             return None
         dt, attr = self.get_datetime_item("RECURRENCE-ID")
+
+        # Coerce any date to a UTC datetime if TZID was specified.
+
         tzid = attr.get("TZID")
         if tzid:
             dt = to_timezone(to_datetime(dt, tzid), "UTC")