Add unrelated but handy function: timegm(), to calculate Unix
timestamp from GMT tuple.
diff --git a/Lib/calendar.py b/Lib/calendar.py
index 8d5681a..c9bc497 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -151,3 +151,20 @@
prweek(cal[i], 2)
print _spacing,
print
+
+# Unrelated but handy function to calculate Unix timestamp from GMT
+EPOCH = 1970
+def timegm(tuple):
+ year, month, day, hour, minute, second = tuple[:6]
+ assert year >= EPOCH
+ assert 1 <= month <= 12
+ days = 365*(year-EPOCH) + leapdays(EPOCH, year)
+ for i in range(1, month):
+ days = days + mdays[i]
+ if month > 2 and isleap(year):
+ days = days + 1
+ days = days + day - 1
+ hours = days*24 + hour
+ minutes = hours*60 + minute
+ seconds = minutes*60 + second
+ return seconds